# Medicare Program; Prospective Payment System for Inpatient Rehabilitation Facilities

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URL: https://www.frixlaw.com/law-library/documents/fr%3A01-19313

## Record

- **Collection:** Federal Register
- **Document type:** Rule
- **Published:** August 7, 2001
- **Citation:** 66 FR 41316

## Text

DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Medicare & Medicaid Services
42 CFR Parts 412 and 413
[CMS-1069-F]
RIN 0938-AJ55
Medicare Program; Prospective Payment System for Inpatient Rehabilitation Facilities

AGENCY:

Centers for Medicare & Medicaid Services (CMS), HHS.

ACTION:

Final rule.

SUMMARY:

This final rule establishes a prospective payment system for Medicare payment of inpatient hospital services provided by a rehabilitation hospital or by a rehabilitation unit of a hospital. It implements section 1886(j) of the Social Security Act (the Act), as added by section 4421 of the Balanced Budget Act of 1997 and as amended by section 125 of the Medicare, Medicaid, and SCHIP [State Children's Health Insurance Program] Balanced Budget Refinement Act of 1999 and by section 305 of the Medicare, Medicaid, and SCHIP Benefits Improvement and Protection Act of 2000. Section 1886(j) of the Act authorizes the implementation of a prospective payment system for inpatient rehabilitation hospitals and rehabilitation units of hospitals. This section also authorizes the Secretary to require rehabilitation hospitals and rehabilitation units to submit data as the Secretary deems necessary to establish and administer the prospective payment system. The prospective payment system described in this final rule replaces the reasonable cost-based payment system under which rehabilitation hospitals and rehabilitation units of hospitals are paid under Medicare.

DATES:

Effective Date:
These regulations are effective on January 1, 2002.

Applicability Date:
The provisions of this final rule are effective for cost reporting periods beginning on or after January 1, 2002.

FOR FURTHER INFORMATION CONTACT:

Robert Kuhl, (410) 786-4597 (General information, the case-mix classification system, and transition payments).

Pete Diaz, (410) 786-1235 (Requirements for completing the patient assessment instrument, and other assessment instrument issues).

Nora Hoban, (410) 786-0675 (Payment system, calculation of the payment rates, update factors, relative weights/case-mix index, wage index, transfer policies, and payment adjustments).

SUPPLEMENTARY INFORMATION:

Availability of Copies, and Electronic Access

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online database through GPO Access, a service of the U.S. Government Printing Office. The website address is: http://www.access.gpo.gov/nara/index.html.

To assist readers in referencing sections contained in this document, we are providing the following table of contents.

Table of Contents

I. Background

A. General

B. Summary of the Statutory Provisions Governing the IRF Prospective Payment System

C. Summary of the November 3, 2000 Proposed Rule

D. General Overview of the IRF Prospective Payment System

E. Summary of Public Comments Received on the November 3, 2000 Proposed Rule

II. Requirements and Conditions for Payment Under the Prospective Payment System for IRFs

A. Classification Criteria for IRFs

B. Completion of Patient Assessment Instrument

C. Limitation on Charges to Beneficiaries

D. Furnishing of Inpatient Hospital Services Directly or Under Arrangements

E. Reporting and Recordkeeping Requirements

III. Research to Support the Establishment of the IRF Prospective Payment System

A. Overview of Research for the Proposed Rule

B. Updated Research for the Final Rule

C. Research on the Patient Assessment Instrument for the Final Rule

D. Analyses to Support Future Adjustments to the IRF Prospective Payment System

IV. The IRF Patient Assessment

A. Implementation of a Patient Assessment Instrument

B. The Patient Assessment Process

C. Documentation Requirements for the Patient Assessment

D. Patient Assessment Schedule and Data Transmission

E. Quality Monitoring

F. Training and Technical Support for IRFs

G. Release of Information Collected Using the Patient Assessment Instrument

H. Patient Rights

I. Medical Review Under the IRF Prospective Payment System

V. Case-Mix Group Patient Classification System

A. Background

B. Description of Methodology Used to Develop the CMGs Based on the FIM-FRG Methodology for the Final Rule

C. Description of Methodology Used to Develop the CMGs for Special Cases for the Final Rule

D. Final Set of CMGs

E. Methodology to Classify Patients into CMGs

F. Adjustment to the CMGs

VI. Payment Rates

A. Development of CMG Relative Weights

B. Transfer Payment Policy

C. Special Cases That Are Not Transfers

D. Adjustments

E. Calculation of the Budget Neutral Conversion Factor

F. Development of the Federal Prospective Payments

G. Examples of Computing the Adjusted Facility Prospective Payments

H. Computing Total Payments under the IRF Prospective Payment System

I. Method of Payment

J. Update to the Adjusted Facility Federal Prospective Payments

K. Publication of the Federal Prospective Payment Rates

L. Limitations on Administrative or Judicial Review

VII. Provisions of the Final Regulations

VIII. Regulatory Impact Analysis

A. Introduction

B. Anticipated Effects of the Final Rule

C. Alternatives Considered

D. Executive Order 12866

IX. Collection of Information Requirements

X. Waiver of Proposed Rulemaking

Regulations Text

Addendum—Tables

Appendix A—Technical Discussion of Cases and Providers Used in RAND Analysis

Appendix B—Inpatient Rehabilitation Facility Patient Assessment Instrument

Appendix C—List of Comorbidities

Appendix D—The IRF Market Basket

Alphabetical List of Acronyms Appearing in the Final Rule

ADL Activities of Daily Living

BBA Balanced Budget Act of 1997, Public Law 105-33

BBRA Medicare, Medicaid, and SCHIP [State Children's Health Insurance Program] Balanced Budget Refinement Act of 1999, Public Law 106-113

BIPA Medicare, Medicaid, and SCHIP Benefits Improvement and Protection Act of 2000, Public Law 106-554

CMGs Case-mix groups

CMI Case-mix index

CMS Centers for Medicare & Medicaid Services (formerly the Health Care Financing Administration)

COS Clinical Outcomes Systems

DRGs Diagnosis-related groups

FIM Functional independence measure

FRG Function-related group

FY Federal fiscal year

HCFA Health Care Financing Administration (now the Centers for Medicare & Medicaid Services)

HIPAA Health Insurance Portability and Accountability Act of 1996, Public Law 104-191

HHAs Home health agencies

HMO Health maintenance organization

IRFs Inpatient rehabilitation facilities

MDCN Medicare Data Collection Network

MDS-PAC Minimum Data Set for Post-Acute Care

MedPAC Medicare Payment Advisory Commission

MedPAR Medicare Provider Analysis and Review File Tool

OASIS Outcome and Assessment Information Set

ProPAC Prospective Payment Assessment Commission

RAPs Resident assessment protocols

RICs Rehabilitation impairment categories

SNFs Skilled nursing facilities

TEFRA  Tax Equity and Fiscal Responsibility Act of 1982, Public Law 97-248

UDSmr Uniform Data Set for medical rehabilitation

I. Background

A. General

On November 3, 2000, we published a proposed rule in the
Federal Register
(65 FR 66304, HCFA-1069-P) to announce, and solicit public comments on, our proposed plans to establish a prospective payment system under Medicare for inpatient hospital services furnished by a rehabilitation hospital or a rehabilitation unit of a hospital. (The proposed rule and all other important information regarding the proposed IRF prospective payment system is contained on our website at www.hcfa.gov/medicare/irfpps.htm.) Section 1886(j) of the Social Security Act (the Act), as added by section 4421 of the Balanced Budget Act of 1997 (BBA)(Public Law 105-33) and as amended by section 125 of the Medicare, Medicaid, and SCHIP [State Children's Health Insurance Program] Balanced Budget Refinement Act of 1999 (BBRA) (Public Law 106-113) and section 305 of the Medicare, Medicaid, and SCHIP Benefits Improvement and Protection Act of 2000 (BIPA) (Public Law 106-554), authorizes the implementation of such a prospective payment system. Below we provide a history of Medicare payments for inpatient rehabilitation services and a discussion of the legislative changes that have affected these payments.

When the Medicare statute was originally enacted in 1965, Medicare payment for hospital inpatient services was based on the reasonable costs incurred in furnishing services to Medicare beneficiaries. The statute was later amended by section 101(a) of the Tax Equity and Fiscal Responsibility Act of 1982 (Public Law 97-248) to limit payment by placing a limit on allowable costs per discharge. Section 601 of the Social Security Amendments of 1983 (Public Law 98-21) added a new section 1886(d) to the Act that replaced the reasonable cost-based payment system for most hospital inpatient services. Section 1886(d) of the Act provides for a prospective payment system for the operating costs of hospital inpatient stays effective with hospital cost reporting periods beginning on or after October 1, 1983.

Although most hospital inpatient services became subject to a prospective payment system, certain specialty hospitals were excluded from that system. Inpatient rehabilitation hospitals and distinct part rehabilitation units in hospitals were among the excluded facilities. We refer to these inpatient rehabilitation hospitals and units as “inpatient rehabilitation facilities” or “IRFs” throughout this rule.

Subsequent to the implementation of the hospital inpatient prospective payment system, both the number of excluded IRFs, particularly distinct part units, and Medicare payments to these facilities grew rapidly. In order to control escalating costs, the Congress, through enactment of section 4421 of the BBA, section 125 of the BBRA, and section 305 of the BIPA, provided for the implementation of a prospective payment system for IRFs. Section 4421 of the BBA amended the Act by adding section 1886(j), which authorizes the implementation of a prospective payment system for inpatient rehabilitation services. Section 125 of the BBRA amended section 1886(j) of the Act (as added by the BBA) to require the Secretary to use the discharge as the payment unit for inpatient rehabilitation services under the prospective payment system and to establish classes of patient discharges by functional-related groups. Section 305 of the BIPA further amended section 1886(j) of the Act to allow rehabilitation facilities to elect to be paid the full Federal prospective payment rather than the blended payments otherwise specified in the Act. This final rule implements the Medicare prospective payment system for IRFs, as authorized by section 1886(j) of the Act, as amended.

The statute provides for the prospective payment system for IRFs to be implemented for cost reporting periods beginning on or after October 1, 2000. However, because of the extensive changes required by the statute to change the payment systems for IRFs as well as the demands of simultaneously implementing new prospective payment systems for outpatient hospital and home health services, we determined, in the proposed rule, that it was not feasible to implement the IRF prospective payment system as of October 1, 2000. The creation of each new payment system or modification to an existing payment system requires an extraordinary amount of lead-time to develop and implement the necessary changes to our existing computerized claims processing systems. In addition, it requires additional time after implementation to ensure that these complex changes are properly administered. Therefore, in the November 3, 2000 proposed rule, we indicated our belief that the earliest feasible date to implement the IRF prospective payment system was for cost reporting periods beginning on or after April 1, 2001.

We have evaluated the changes that will be necessary in our various systems for the IRF prospective payment system in order to accommodate suggestions made in the comments (such as developing and administering a revised patient assessment instrument described in section IV. of this preamble) along with changes to other Medicare payment systems required by the BBA, the BBRA, and the BIPA. After an extensive analysis of the changes required to both the providers' and our systems, we have now determined that the earliest feasible date to implement the IRF prospective payment system in this final rule is for cost reporting periods beginning on or after January 1, 2002. We believe that this is the earliest feasible date given the scope and magnitude of the implementation and administrative requirements, including provider training, associated with the IRF prospective payment system and other mandated payment systems.

B. Summary of the Statutory Provisions Governing the IRF Prospective Payment System

Section 4421(a) of the BBA amended the Act by adding a new section 1886(j) to the Act that provides for the implementation of a Medicare prospective payment system for inpatient hospital rehabilitation services furnished in all IRFs. Under the

prospective payment system, IRFs will be paid based on predetermined amounts. These prospective payments will encompass the inpatient operating and capital costs of furnishing covered rehabilitation services (that is, routine, ancillary, and capital costs) but not costs of approved educational activities, bad debts, and other services or items that are outside the scope of the IRF prospective payment system. Covered rehabilitation services include services for which benefits are provided under Part A (the Hospital Insurance Program) of the Medicare program.

Section 1886(j)(1)(A) of the Act provides that, notwithstanding section 1814(b) of the Act and subject to the provisions of section 1813 of the Act regarding beneficiary deductibles and coinsurance responsibility, the amount of payment for inpatient rehabilitation hospital services equals an amount determined under section 1886(j) of the Act. Sections 1886(j)(1)(A)(i) and (j)(1)(A)(ii) of the Act, as in effect prior to the enactment of sections 305(b)(1)(A), (B), and (C) of the BIPA, provide for a transition period covering cost reporting periods that begin during FYs 2001 and 2002 under the prospective payment system. During this transition period, IRFs would receive a payment rate comprising a blend of the “TEFRA percentage” of the amount that would have been paid under Part A with respect to those costs if the prospective payment system had not been implemented, and the “prospective payment percentage” of payments using the IRF prospective payment system rate. The applicable transition percentages are described in section 1886(j)(1)(C) of the Act. Sections 305(b)(1)(A) and (C) of the BIPA amended section 1886(j)(1)(A) and added a new subparagraph (F) to section 1886(j)(1) of the Act, respectively, to allow an IRF to elect to be paid the full Federal prospective payment rather than a payment determined under the transition period methodology described in detail below. The provisions of section 305(b) of the BIPA take effect as if included in the enactment of the BBA.

Section 1886(j)(1)(B) of the Act, in effect prior to the enactment of section 305 of the BIPA, sets forth a requirement applicable to all IRFs for the payment rates under the fully implemented prospective payment system. Notwithstanding section 1814(b) of the Act and subject to the provisions of section 1813 of the Act regarding beneficiary deductibles and coinsurance responsibility, the amount of the payment for the operating and capital costs of an IRF for a payment unit (as defined in section 1886(j)(1)(D) of the Act) in a cost reporting period beginning on or after October 1, 2002 (FY 2003), will be equal to the per unit payment rate established under the prospective payment system for the fiscal year in which the payment unit of service occurs. Section 305(b)(1)of the BIPA amended section 1886(j)(1)(B) of the Act and added a new subparagraph (F) to section 1886(j)(l) to make the provisions of section 1886(j)(1)(B) of the Act applicable to an IRF that elects, not later than 30 days before its first cost reporting period for which it is subject to the payment methodology of section 1886(j)(1) of the Act, to be paid the full Federal prospective payment rather than a payment determined under the transition period methodology.

Sections 1886(j)(1)(C)(i) and (ii) of the Act set forth the applicable TEFRA and prospective payment rate percentages during the transition period. The two sections specify that, for a cost reporting period beginning on or after October 1, 2000, and before October 1, 2001 (FY 2001), the “TEFRA percentage” is 66
2/3
percent and the “prospective payment percentage” is 33
1/3
percent; and on or after October 1, 2001, and before October 1, 2002 (FY 2002), the “TEFRA percentage” is 33
1/3
percent and the “prospective payment percentage” is 66
2/3
percent. (As explained earlier in section I.A. of this final rule, we are implementing the IRF prospective payment system for cost reporting periods beginning on or after January 1, 2002. See section VI.H. of this final rule for a discussion of the implementation of the transition period methodology.)

Section 1886(j)(1)(D) of the Act contains the definition of “payment unit.” Until the passage of the BBRA, “payment unit” was defined by the statute as “a discharge, day of inpatient hospital services, or other unit of payment defined by the Secretary.” Section 125(a)(1) of the BBRA amended section 1886(j)(1)(D) of the Act by striking “day of inpatient hospital services, or other unit of payment defined by the Secretary.” Accordingly, the payment unit utilized in the IRF prospective payment system will be a discharge.

Section 125(a)(3) of the BBRA amended the Act by adding a new section 1886(j)(1)(E) to the Act that states: “Nothing in this subsection shall be construed as preventing the Secretary from providing for an adjustment to payments to take into account the early transfer of a patient from a rehabilitation facility to another site of care.” Our transfer policy is discussed in section VI.B. of this preamble.

Section 305(b)(1)(C) of the BIPA amended the Act by adding section 1886(j)(1)(F) to provide that an IRF may elect, not later than 30 days before its first cost reporting period for which the payment methodology applies to the facility, to have payment made to the facility under the provision of section 1886(j)(1)(B) of the Act (the fully implemented prospective payment system) rather than section 1886(j)(1)(A) of the Act (payment under the transition methodology) for each cost reporting period to which the payment methodology applies.

Section 1886(j)(2)(A) of the Act, as added by section 4421 of the BBA, directed the Secretary to establish case-mix groups (CMGs) based on the factors as the Secretary deems appropriate, which may include impairment, age, related prior hospitalization, comorbidities, and functional capability of the patient. This section also requires the Secretary to establish a method of classifying specific patients in IRFs within these groups. Section 125(a)(2) of the BBRA amended section 1886(j)(2)(A)(i) of the Act to establish classes of patient discharges by functional-related groups. Section 1886(j)(2)(A)(i) of the Act reads: “classes of patient discharges of rehabilitation facilities by functional-related groups (each * * * referred to as a ‘case mix group'), based on impairment, age, comorbidities, and functional capability of the patient and such other factors as the Secretary deems appropriate to improve the explanatory power of functional independence measure-function related groups.”

Section 1886(j)(2)(B) of the Act provides that the Secretary must assign each case-mix group a weighting factor that reflects the relative facility resources used for patients classified within the group as compared to patients classified within other groups.

Section 1886(j)(2)(C)(i) of the Act directs the Secretary to adjust “from time to time” the case-mix classifications and weighting factors “as appropriate to reflect changes in treatment patterns, technology, case-mix, number of payment units for which payment is made * * * and other factors which may affect the relative use of resources.” Such periodic adjustments must be made in a manner so that changes in aggregate payments are a result of real changes in case-mix, not changes in coding that are unrelated to real changes in case-mix. Section 1886(j)(2)(C)(ii) of the Act provides that, if the Secretary determines that adjustments to the case-mix classifications or weighting factors resulted in (or are likely to result in) a

change in aggregate payments that does not reflect real changes in case-mix, the Secretary must adjust the per payment unit payment rate for subsequent years so as to eliminate the effect of the coding or classification changes.

Section 1886(j)(2)(D) of the Act authorizes the Secretary to require rehabilitation facilities that provide inpatient hospital services to submit such data as the Secretary deems necessary to establish and administer the IRF prospective payment system.

Section 1886(j)(3)(A) of the Act describes how the prospective payment rate will be determined. A prospective payment rate must be determined for each payment unit for which an IRF is entitled to payment under the prospective payment system. The payment rate will be based on the average payment per payment unit for inpatient operating and capital costs of IRFs, using the most recently available data, and adjusted by the following factors:

• Updating the per-payment unit amount to the fiscal year involved by the applicable percentage increase (as defined by section 1886(b)(3)(B)(ii) of the Act) covering the period from the midpoint of the period for such data through the midpoint of FY 2000 and by an increase factor specified by the Secretary for subsequent fiscal years.

• Reducing the rates by a factor that is equal to the proportion of Medicare payments under the prospective payment system as estimated by the Secretary based on prospective payment amounts that are additional payments relating to outlier and related payments.

• Accounting for area wage variations among IRFs.

• Applying the case-mix weighting factors.

• Adjusting for such other factors as the Secretary determines necessary to properly reflect variations in necessary costs of treatment among IRFs.

Until the passage of the BIPA, section 1886(j)(3)(B) of the Act directed the Secretary to establish IRF prospective payment system payment rates during FYs 2001 and 2002 at levels so that, in the Secretary's estimation, total payments under the new system will equal 98 percent of the amount of payments that would have been made for operating and capital costs in those years if the IRF prospective payment system had not been implemented. In establishing these payment amounts, the Secretary must consider the effects of the prospective payment system on the total number of payment units from IRFs and other factors. Section 305(a) of the BIPA amended section 1886(j)(3)(B) of the Act by striking “98 percent” and adding “98 percent for fiscal year 2001 and 100 percent for fiscal year 2002”. The heading for section 305(a) of BIPA is “Assistance with administrative costs associated with the completion of patient assessment.” In addition, section 305(b)(2) amended section 1886(j)(3)(B) of the Act to clarify that in establishing the levels of the payment rates under section 1886(j)(3)(B) of the Act, the Secretary is not to account for any payment adjustment for IRFs electing not to be paid under the transition period methodology as allowed under section 1886(j)(1)(F) of the Act as added by section 305(b)(1)(C) of the BIPA. Section VI.E. of this final rule contains a further discussion of the development of payment rates under section 1886(j)(3)(B) of the Act.

Section 1886(j)(3)(C) of the Act provides for an annual increase factor. This factor must be based on an appropriate percentage increase in a market basket of goods and services comprising services for which payment is made under section 1886(j) of the Act (which may be the market basket percentage increase described in section 1886(b)(3)(B)(iii) of the Act).

Under section 1886(j)(4)(A) of the Act, the Secretary is authorized, but not required, to provide for an additional payment to a rehabilitation facility for patients in a case-mix group, based upon the patient being classified as an outlier based on an unusual length of stay, costs, or other factors specified by the Secretary. The amount of the additional payment must approximate the marginal cost of care above what otherwise would be paid and must be budget neutral. The total amount of the additional payments to IRFs under the prospective payment system for a fiscal year may not be projected to exceed 5 percent of the total payments based on prospective payment rates for payment units in that year.

Section 1886(j)(4)(B) of the Act establishes that the Secretary is authorized but not required to provide for adjustments to the payment amounts under the prospective payment system as the Secretary deems appropriate to take into account the unique circumstances of IRFs located in Alaska and Hawaii.

Section 1886(j)(5) of the Act provides for the Secretary to publish in the
Federal Register
, on or before August 1 before each fiscal year, the classifications and weighting factors for the IRF case-mix groups and a description of the methodology and data used in computing the prospective payment rates for that fiscal year.

Section 1886(j)(6) of the Act provides that the Secretary must adjust the proportion (as estimated by the Secretary from time to time) of IRFs' costs that are attributable to wages and wage-related costs, of the prospective payment rates for area differences in wage levels by a factor (established by the Secretary) reflecting the relative hospital wage level in the geographic area of the IRF compared to the national average wage level for such facilities. Additionally, the Secretary is required to make a budget-neutral update to the area wage adjustment factor no later than October 1, 2001, and at least once every 36 months thereafter. The budget neutral update is based on information available to the Secretary (and updated as appropriate) of the wages and wage-related costs incurred in furnishing rehabilitation services.

Sections 1886(j)(7)(A), (B), (C), and (D) of the Act establish that there shall be no administrative or judicial review, under sections 1869 and 1878 of the Act or otherwise, of the establishment of case-mix groups, the methodology for the classification of patients within these groups, the weighting factors, the prospective payment rates, outlier and special payments and area wage adjustments.

Section 125(b) of the BBRA provides that the Secretary shall conduct a study of the impact on utilization and beneficiary access to services of the implementation of the IRF prospective payment system. A report on the study must be submitted to the Congress not later than 3 years after the date the IRF prospective payment system is first implemented.

C. Summary of the November 3, 2000 Proposed Rule

In the November 3, 2000 proposed rule, we proposed to establish a new subpart P under 42 CFR Part 412 of the Medicare regulations to implement the IRF prospective payment system and to make technical and conforming changes to other appropriate sections under Parts 412 and 413.

In the proposed rule, to support and explain our proposed policies, we presented the following:

• An overview of the reasonable cost-based payment system that would be replaced by the IRF prospective payment system.

• An extensive discussion of past research on IRF patient classification systems and prospective payment systems, including earlier research performed by the RAND Corporation that supported a per discharge based prospective payment system using a patient classification system known as Functional Independence Measures-Functional Related Groups (FIM-FRGs).

• A discussion of the following policy objectives we identified to evaluate the relative merits of the various policy options considered:

—The creation of a beneficiary-centered payment system that promotes quality of care, access to care, and continuity of care and is administratively feasible while controlling costs.

—The provision of incentives to furnish services as efficiently as possible without diminishing the quality of the care or limiting access to care.

—The creation of a payment system that is fair and equitable to facilities, beneficiaries, and the Medicare program.

—The development of an IRF prospective payment system that has the capability to recognize legitimate cost differences among various settings furnishing the same service; and a patient classification system used to group patients and services that is based on clinically coherent categories and, at the same time, reflects similar resource use. This would limit opportunities to “upcode” or “game” the system.

• A discussion of options considered for the following major components of the proposed IRF prospective payment system: the patient assessment instrument; the patient classification system; the unit of payment; and the data used to construct the payment rates.

• A discussion of the proposed requirement that IRFs complete the Minimum Data Set for Post-Acute Care (MDS-PAC) (a patient assessment instrument) as a part of the data collection deemed necessary by the Secretary to implement and administer the IRF prospective payment system. (As explained in section IV. of this final rule, we are adopting a revised patient assessment instrument.)

• A discussion of the proposed IRF patient classification system using CMGs and the prospective payment system supported by RAND's research using 1996 and 1997 data. The results of this research were released in a report by RAND in July 2000. (This report is contained on our website: www.hcfa.gov/medicare/irfpps.htm.)

• A discussion of the impact of the proposed IRF prospective payment system on the Medicare program and on IRFs.

D. General Overview of the IRF Prospective Payment System

In accordance with the requirements of section 1886(j) of the Act, and following issuance of the November 3, 2000 proposed rule and consideration of public comments, we are implementing a prospective payment system for IRFs that replaces the current reasonable cost-based payment system. The new prospective payment system utilizes information from a patient assessment instrument to classify patients into distinct groups based on clinical characteristics and expected resource needs. Separate payments are calculated for each group with additional case-level and facility-level adjustments applied.

We are requiring IRFs to complete the patient assessment instrument described in section IV. of this preamble, for all Medicare Part A fee-for-service patients admitted or discharged on or after January 1, 2002.

Data from the patient assessment instrument will be used to—

• Determine the appropriate classification of a Medicare patient into a CMG for payment under the prospective payment system (using data from only the initial patient instrument completed after admission, as described in section IV. of this preamble);

• Implement a system to monitor the quality of care furnished to Medicare patients; and

• Ensure that appropriate case-mix and other adjustments can be made to the patient classification system.

Further details of the CMG classification system are discussed in section V. of this preamble.

IRFs are required to input the patient assessment data into a computerized data system. In general, this system consists of a computerized patient grouping software program (GROUPER software) and data transmission software.

Upon the discharge of a Medicare patient, the GROUPER software will determine the appropriate CMG classification number. IRFs must enter the CMG classification number onto the Medicare claim form in accordance with Medicare claims processing procedures. The operational aspects and instructions for completing and submitting Medicare claims under the IRF prospective payment system will be addressed in a Medicare program memorandum issued prior to the effective date of this final rule. We are aware that, beginning October 16, 2002, the submission of electronic claims must be in compliance with the administrative simplification provisions of the Health Insurance Portability and Accountability Act of 1996 (HIPAA), Public Law 104-191, as specified in the Standards for Electronic Transactions final rule published in the
Federal Register
on August 17, 2000 (65 FR 50312). We will be taking the necessary steps in the future to ensure compliance with this provision of the HIPAA.

The payment unit for the IRF prospective payment system for Medicare patients will be a discharge. The payment rates will encompass inpatient operating and capital costs of furnishing covered inpatient rehabilitation hospital services, including routine, ancillary, and capital costs, but not the costs of bad debts or approved educational activities. (A detailed description of the payment policies, including the transition period methodology, appears in section VI. of this final rule.)

E. Summary of Public Comments Received on the November 3, 2000 Proposed Rule

The November 3, 2000 proposed rule provided for a 60-day comment period ending January 2, 2001. We extended this initial comment period an additional 30 days, until February 1, 2001, through the publication of a notice in the
Federal Register
on December 27, 2000 (65 FR 81813).

We received a total of 399 timely items of correspondence containing multiple comments on the November 3, 2000 proposed rule. Major issues addressed by commenters included the use of the MDS-PAC as the patient assessment instrument; various aspects of the CMG classification system, including the recognition of comorbidities; various aspects of the facility and case level payment adjustments; and the requirements to be classified as an IRF.

Summaries of the public comments received and our responses to those comments are set forth below under the appropriate subject heading.

II. Requirements and Conditions for Payment Under the Prospective Payment System for IRFs

In the November 3, 2000 proposed rule, we proposed the conditions that an IRF must meet to be paid under the IRF prospective payment system (proposed § 412.604). In general, if the conditions are not met, we may reduce or withhold Medicare payments or may classify the IRF as a hospital that is paid under the acute care hospital prospective payment system (proposed § 412.604(a)(2)).

A. Classification Criteria for IRFs

1. Provisions of Proposed Rule

In the November 3, 2000 proposed rule, we stated that we were not proposing to change the existing criteria for a hospital or hospital unit to be classified as a rehabilitation hospital or a rehabilitation unit that is excluded

from the acute care hospital prospective payment systems under sections 1886(d) and 1886(g) of the Act, that are codified in regulations in 42 CFR Part 412. In addition, we indicated that we were not proposing to revise the survey and certification procedures applicable to entities seeking this classification.

Under § 412.604(b), we proposed that, to be classified as a rehabilitation hospital or rehabilitation unit, an IRF must meet the criteria set forth in existing §§ 412.23(b), 412.25, and 412.29 for exclusion from the inpatient hospital prospective payment system. Existing § 412.23(b) provides that a rehabilitation hospital must—

• Have a provider agreement under Part 489 to participate as a hospital;

• Except for a newly participating hospital seeking exclusion for its first 12-month cost reporting period, show that during its most recent 12-month cost reporting periods, it served an inpatient population of whom at least 75 percent required intensive rehabilitation services for one or more of 10 conditions specified in the regulations;

• Have in effect a preadmission screening procedure under which each prospective patient's condition and medical history are reviewed to determine whether the patient is likely to benefit significantly from an intensive inpatient hospital program or assessment;

• Ensure that patients receive close medical supervision and furnish rehabilitative nursing, physical therapy, and occupational therapy, plus, as needed, speech therapy, social or psychological services, and orthotic and prosthetic services, through the use of qualified personnel;

• Have a director of rehabilitation who meets the criteria specified in the regulations;

• Have a plan of treatment for each inpatient that is established, reviewed, and revised as needed by a physician in consultation with other professional personnel who provide services to the patient; and

• Use a coordinated multidisciplinary team approach in the rehabilitation of each inpatient in the manner specified in the regulations.

Existing § 412.25 provides that a rehabilitation unit must—

• Be part of an institution that has in effect an agreement under part 489 of this chapter to participate as a hospital; is not excluded in its entirety from the prospective payment systems; and has enough beds that are not excluded from the prospective payment systems to permit the provision of adequate cost information, as required by § 413.24(c);

• Have written admission criteria that are applied uniformly to both Medicare and non-Medicare patients;

• Have admission and discharge records that are separately identified from those of the hospital in which it is located and are readily available;

• Have policies specifying that necessary clinical information is transferred to the unit when a patient of the hospital is transferred to the unit;

• Meet applicable State licensure laws;

• Have utilization review standards applicable for the type of care offered in the unit;

• Have beds physically separate from (that is, not commingled with) the hospital's other beds;

• Be serviced by the same fiscal intermediary as the hospital;

• Be treated as a separate cost center for cost finding and apportionment purposes;

• Use an accounting system that properly allocates costs;

• Maintain adequate statistical data to support the basis of allocation;

• Report its costs in the hospital's cost report covering the same fiscal period and using the same method of apportionment as the hospital;

• As of the first day of the first cost reporting period for which all other exclusion requirements are met, the unit is fully equipped and staffed and is capable of providing hospital inpatient rehabilitation care regardless of whether there are any inpatients in the unit on that date.

In addition, existing § 412.25 contains requirements on changes in hospital size and existing § 412.29 includes specific requirements for new and converted units (as specified in § 412.30), preadmission screening, staffing, plans of treatment, a coordinated multidisciplinary team approach as documented in clinical records, and administration.

2. Public Comments and Departmental Responses

Comment:
Many commenters suggested that we update the 10 conditions specified in § 412.23(b)(2) that are used to determine if at least 75 percent of facility's patients require intensive rehabilitative services. One commenter recommended completely eliminating the “75 percent” rule to classify a facility or unit as an IRF because we proposed to use the 21 rehabilitation impairment categories (RICs) as defined in the proposed rule.

Response:
Currently, hospitals or hospital units that meet the requirements at existing §§ 412.23(b), 412.25, and 412.29 are eligible to be classified as rehabilitation hospitals or rehabilitation units that are excluded from the acute care inpatient hospital prospective payment systems established under sections 1886(d) and 1886(g) of the Act. Section 1886(j) of the Act was added to implement the prospective payment system described in this final rule for excluded hospitals and hospital units that are classified as rehabilitation hospitals and rehabilitation units. As we noted in the proposed rule, we were not proposing changes to the existing requirements for classification under § 412.23(b)(2). We believe that the existing requirements are appropriate in classifying a hospital or unit as an IRF that is paid under section 1886(j) of the Act. Accordingly, for this final rule, we are not revising the existing requirements at §§ 412.23(b), 412.25, and 412.29. However, as more data, including patient data associated with the RICs, become available after we initially implement the IRF prospective payment system, we may reconsider whether it would be appropriate to revisit the requirement regarding the “75 percent” rule in the future.

Comment:
Several commenters suggested that we amend § 412.30 to clarify that hospitals seeking to convert skilled nursing facility (SNF) beds to excluded inpatient rehabilitation beds must wait for 12 months before being excluded from the acute care hospital prospective payment system (and be paid under the IRF prospective payment system) just as acute care hospitals must do if they convert medical-surgical beds to excluded inpatient rehabilitation beds.

Response:
Currently, the 12-month delay for the conversion of beds under § 412.30 to IRF beds does not apply to SNF beds. For this final rule, as stated in the proposed rule, we are not changing the existing criteria for a hospital or hospital unit to be classified as a rehabilitation hospital or a rehabilitation unit that is excluded from the acute care inpatient hospital prospective payment system. We believe that the existing requirements are appropriate in classifying a hospital unit as an IRF that is paid under section 1886(j) of the Act. In accordance with section 125(b) of the BBRA, we indicated that we will be conducting a study of the impact on utilization and beneficiary access to services of the implementation of the IRF prospective payment system. If this study shows the need to change this requirement to include converted SNF beds, we will propose to do so in the future. Accordingly, we are not making any

changes to the existing § 412.30 as the commenters suggested.

3. Provisions of the Final Rule

Under §§ 412.604(a) and (b) of the final regulations, we are specifying that, for cost reporting periods beginning on or after January 1, 2002, hospitals or hospital units that are classified as rehabilitation hospitals or rehabilitation units will be paid under the IRF prospective payment system (except for IRFs that are paid under the special payment provisions at § 412.22(c) of the regulations) as described below.

• Requirements for IRFs. The IRF prospective payment system will apply to inpatient rehabilitation services furnished by Medicare participating entities that are classified as rehabilitation hospitals or rehabilitation units under §§ 412.23(b), 412.25, and 412.29. In addition, we are adopting as final the proposed technical changes to §§ 412.22, 412.23, 412.25, and 412.29 to reflect the application of the classification criteria to IRFs under the IRF prospective payment system.

• Location of IRFs outside the 50 States. IRFs that meet the requirements of §§ 412.22, 412.23, 412.25, 412.29, and 412.30 that are located in Puerto Rico, Guam, the Virgin Islands, American Samoa, the Northern Mariana Islands, and the District of Columbia will be subject to the IRF prospective payment system.

• Hospitals Not Subject to the IRF Prospective Payment System. The following hospitals are paid under special payment provisions described in § 412.22(c) and, therefore, are
not
subject to the IRF prospective payment system rules:

—Veterans Administration hospitals.

—Hospitals that are reimbursed under State cost control systems approved under 42 CFR Part 403.

—Hospitals that are reimbursed in accordance with demonstration projects authorized under section 402(a) of Public Law 90-248 (42 U.S.C. 1395b-1) or section 222(a) of Public Law 92-603 (42 U.S.C. 1395b-1 (note)).

• Other Technical Changes. In addition to the technical changes to §§ 412.22, 412.23, 412.25, and 412.29 cited above, we are adopting as final the proposed technical changes to §§ 412.1, 412.20, 412.116, 412.130, 413.1, 413.40, and 413.64 to reflect payment for inpatient rehabilitation services furnished by IRFs under the IRF prospective payment system, effective January 1, 2002.

B. Completion of Patient Assessment Instrument

Proposed § 412.604(c) provided that, for each Medicare patient admitted or discharged on or after April 1, 2001, the IRF must complete a patient assessment instrument. In the proposed rule under § 412.606(b), we had proposed the use of the MDS-PAC as the patient assessment instrument. However, as discussed in detail in section IV.D. of this preamble, we are replacing the MDS-PAC with our inpatient rehabilitation facility patient assessment instrument. Under § 412.604(c) of this final rule, we are requiring an IRF to complete our inpatient rehabilitation facility patient assessment instrument for each Medicare Part A fee-for-service patient admitted to or discharged from the IRF on or after January 1, 2002.

C. Limitation on Charges to Beneficiaries

Proposed § 412.604(d) specified that an IRF may not charge a beneficiary for any services for which payment is made by Medicare, even if the facility's costs of furnishing services to that beneficiary are greater than the amount the facility is paid under the IRF prospective payment system. Proposed § 412.604(d) further specified that an IRF receiving a prospective payment for a covered hospital stay (that is, a stay that includes at least one covered day) may charge the Medicare beneficiary or other person only for the applicable deductible and coinsurance amounts under §§ 409.82, 409.83, and 409.87 of the regulations.

We did not receive any comments on proposed § 412.604(d) and are adopting it as final with one modification. In the proposed rule, we inadvertently did not specify that, in addition to the applicable deductible and coinsurance amounts, a facility is limited to its charges to beneficiaries and other individuals on their behalf under existing § 489.20(a) of the regulations.

D. Furnishing of Inpatient Hospital Services Directly or Under Arrangement

Proposed § 412.604(e) specified that an IRF must furnish all necessary covered services to the Medicare beneficiary either directly or under arrangements. The IRF prospective payments are payment in full for all inpatient hospital services, as defined in § 409.10. We proposed that we would not pay any provider or supplier other than the IRF for services furnished to a Medicare beneficiary who is an inpatient of the IRF, except for physicians' services reimbursable under § 405.550(b) and services of an anesthetist employed by a physician reimbursable under § 415.102(a) of the regulations.

We did not receive any comments on proposed § 412.604(e) and are adopting it as final with two conforming changes:

We are revising proposed paragraph (e)(1) to conform it to the provisions of existing § 412.50, which lists the types of services that are not included as inpatient hospital services. Section 412.50 was revised on April 7, 2000 (65 FR 18537). However, we inadvertently did not include the revised list in the proposed rule.

Proposed § 412.622(b) (which we are adopting as final) specifies that payments for approved educational activities, bad debts, and per units for blood clotting factor are separate payments made outside the scope of the full prospective payment to IRFs for inpatient rehabilitation services. We are including in § 412.604(e)(l) a citation to § 412.622(b) to clarify that payment for these three types of services are not included in the full prospective payment for all inpatient IRF services.

E. Reporting and Recordkeeping Requirements

Under proposed § 412.604(f), we specified that all IRFs participating in the IRF prospective payment system must meet the recordkeeping and cost reporting requirements of §§ 413.20 and 413.24 of the regulations.

We did not receive any comments on proposed § 412.604(f) and, therefore, are adopting it as final without modification.

III. Research To Support the Establishment of the IRF Prospective Payment System

A. Overview of Research for the Proposed Rule

In 1995, the Rand Corporation (RAND) began extensive research, sponsored by us, on the development of a per discharge based prospective payment system using a patient classification system known as Functional Independence Measures-Functional Related Groups (FIM-FRGs) using 1994 data. The results of RAND's earliest research were released in September 1997 and are contained in two reports available through the National Technical Information Service (NTIS). The reports are—

• Classification System for Inpatient Rehabilitation Patients—A Review and Proposed Revisions to the Function Independence Measure-Function Related Groups, NTIS order number PB98-105992INZ; and

• Prospective Payment System for Inpatient Rehabilitation, NTIS order number PB98-106024INZ.

These reports can be ordered toll-free by calling the NTIS sales desk at 800-553-6847 or by e-mail at www.orders@ntis.fedworld.gov.

In summarizing these reports, RAND found in the research based on 1994 data that, with limitations, the FIM-FRGs were effective predictors of resource use based on the proxy measurement: length of stay. FRGs based upon FIM motor scores, cognitive scores, and age remained stable over time (prediction remained consistent between 1990 and 1994 data). Researchers at RAND developed, examined, and evaluated a model payment system based upon FIM-FRG classifications that explains approximately 50 percent of patient costs and approximately 60 to 65 percent of costs at the facility level. Based on this earlier analysis, RAND concluded that an IRF prospective payment system using this model is feasible.

In July 1999, we contracted with RAND to update their earlier research. The update included an analysis of FIM data, the FRGs, and the model rehabilitation prospective payment system using more recent data from a greater number of IRFs. The purpose of updating the earlier research was to develop the underlying data necessary to support the Medicare IRF prospective payment system based on case-mix groups for the proposed rule. RAND expanded the scope of their earlier research to include the examination of several payment elements, such as comorbidities, facility-level adjustments, and implementation issues, including evaluation and monitoring.

Specifically, as described in the proposed rule (65 FR 66313), RAND performed the following tasks:

• Constructed a data file, using 1996 and 1997 FIM data from the Uniform Data Set for medical rehabilitation (UDSmr) and the Clinical Outcomes System (COS). Our files and other sources were used to obtain data on Medicare beneficiaries and IRFs for 1996 and 1997.

• Determined that the FIM data from UDSmr and COS data are representative of the Medicare population.

• Identified factors or variables that were used to design the proposed prospective payment system.

• Developed data on the elements of the proposed prospective payment system regarding RICs, the CMGs, relative weights and payment rates for each CMG, facility-level adjustments, and patient-level adjustments.

• Developed data to examine the joint performance of all of the payment system elements by simulating facility payments for our analysis of the impact of implementing the payment system.

• Developed data to assist in identifying specific issues in connection with implementing the payment system.

• Presented options regarding the design and development of a system to monitor the effects of the payment system and other changes in the health care market on IRFs and on other post-acute care providers, including home health agencies and skilled nursing facilities, by measuring factors such as access, utilization, quality, and cost of care.

RAND issued a report on the findings on its analysis of the 1996 and 1997 data in July 2000. We have made the report available on our web site at www.hcfa.gov/medicare/irfpps.htm.

B. Updated Research for the Final Rule

In the November 3, 2000 proposed rule, we indicated we would refine some of the patient CMGs and corresponding weights and rates if further analysis of the data file and consideration of the comments that we received in response to the proposed rule warranted such refinements.

RAND has updated their research, as discussed below, to include patient assessment data and Medicare beneficiary data from more recent years than the data used to develop the provisions of the proposed rule. RAND's analysis of the later data assisted us in developing responses to comments on the proposed rule and identifying aspects of the patient classification and payment systems where refinements were justified or where further research was necessary. We discuss the details of refinements that we believe are necessary in section V. (Case-Mix Group Patient Classification System) and in section VI. (Payment Rates) of this final rule.

1. Sources and Description of More Recent Data

We used 1996 and 1997 Medicare program data and patient assessment data to develop the provisions of the proposed rule. For this final rule, we used 1998 and 1999 Medicare program data and patient assessment data as follows:

• Medicare Program Data—Calendar year 1998 and 1999 Medicare Provider Analysis and Review (MedPAR) files were used in RAND's updated research. The MedPAR file contains the records for all Medicare hospital inpatient discharges (including discharges for rehabilitation facilities). The data in the MedPAR file include patient demographics (age, gender, race, residence zip code), clinical characteristics (diagnoses and procedures), and hospitalization characteristics (admission date, discharge date, days in intensive care wards, charges by department, and payment information).

The Medicare cost report data are contained in the Health Care Provider Cost Report Information System (HCRIS). The cost report files contain information on facility characteristics, utilization data, and cost and charge data by cost center. For RAND's updated research, we obtained the HCRIS data from the most current available cost data for cost reports (FYs 1998, 1997, and/or 1996). Supplementary information to this file includes: (1) The wage data for the area in which an IRF is located; (2) data on teaching hospitals, including the number of residents assigned to rehabilitation units and the distribution of resident time across inpatient and outpatient settings; (3) data on the number of Medicare cases at each IRF that represent Supplemental Security Income (SSI) beneficiaries; and (4) information about payments under the existing reasonable cost payment system.

• Patient Assessment Data—We entered into an agreement with the University at Buffalo Foundation Activities, Inc. to obtain 1998 and 1999 UDSmr patient assessment data. For the proposed rule, we entered into an agreement with Caredata.com, Inc. to retrieve COS patient assessment data. However, as mentioned in the proposed rule, the COS has been discontinued as of July 2000. COS patient assessment data for 1998 and 1999 were available though, for a majority of COS providers that operate under the HealthSouth Corporation. Accordingly, we entered into an agreement with the HealthSouth Corporation to retrieve patient assessment data for 1998 and 1999. Collectively, we will refer to the patient assessment data from the UDSmr (1996 through 1999), the COS (1996 and 1997), and the HealthSouth Corporation (1998 and 1999) as FIM data throughout this final rule.

The FIM data include demographic descriptions of the patient (birth date, gender, zip code, ethnicity, marital status, living setting), clinical descriptions of the patient (condition requiring rehabilitation, ICD-9-CM diagnoses, functional independence measures at admission and discharge) and the hospitalization data (encrypted hospital identifier, admission date,

discharge date, charges, payment source, and an indicator of whether this is the first rehabilitation hospitalization for this condition, a readmission, or a short stay for evaluation).

2. Description of the Methodology Used To Construct the Data File

In the proposed rule (65 FR 66314), we described the methodology that RAND used to construct the data file that formed the basis of the proposed CMG patient classification system and the resulting payment weights, rates, and payment adjustments using 1996 and 1997 data. RAND updated and expanded the data file to include the 1998 and 1999 data as follows:

RAND linked the 1998 and 1999 FIM patient records with patient records on the respective MedPAR files that describe the same discharge. RAND determined the Medicare provider number(s) that correspond to each facility code in the FIM data. Next, RAND matched the FIM patients and MedPAR patients within the paired facilities.

Because of the proprietary and sensitive nature of the FIM patient records, certain data fields that specifically identify the patient and the servicing IRF were encrypted. Therefore, as in RAND's previous research, it was necessary to subject the FIM and MedPAR records to a sophisticated and complex matching probability technique. The result produces the most statistically valid match of patient/facility records and a data file that contains the characteristics of each Medicare beneficiary and his or her servicing IRF.

Because of the complex scope and nature of the matching technique used, we have included in Appendix A of this final rule a technical discussion of each step taken to create the updated data file. The tables contained in Appendix A show the actual effects of applying the matching technique on both the patient and facility records for 1996 through 1999.

3. Representativeness of the Updated Data File

It is extremely important to examine the quality of the resulting match, including the extent to which the linked MedPAR and FIM records are representative of the MedPAR universe. We believe that the updated data file described in Appendix A, contains the best available and most representative data to construct a prospective payment system for all IRFs within the parameters of the statutory requirements. Our analysis of the updated data file allows us to develop the CMG patient classification and payment system, described in sections V. and VI. of this final rule.

C. Research on the Patient Assessment Instrument for the Final Rule

In the proposed rule (65 FR 66315), we set forth the proposed requirements regarding the completion of the MDS-PAC rather than the FIM patient assessment instrument. We stated that we would test further whether the MDS-PAC results in patient classifications that are equivalent to the classifications that occurred with the FIM (that is, the assessment instruments that were used to design the prospective payment system).

We expanded RAND's scope of work under the 1999 contract to include a study of the MDS-PAC and FIM instruments to answer the following questions:

• How accurate is the MDS-PAC for use in classifying cases into CMGs for the proposed IRF prospective payment system?

• How do the validity, reliability, and consistency of the FIM and the MDS-PAC elements compare?

• What are the costs associated with the data collection on the FIM and MDS-PAC instruments?

• Are comorbidities being coded accurately on the FIM and the MDS-PAC instruments?

• Does the additional data in the MDS-PAC provide an opportunity for better groupings in the future?

Work on this project was performed by the Harvard Medical School under the RAND contract. The design and results of this study are discussed in detail in section IV. of this final rule.

D. Analyses to Support Future Adjustments to the IRF Prospective Payment System

The principal goal of the analysis described in section III.B. of this final rule is to determine the extent to which measurable patient characteristics, as reported on a patient assessment instrument, permit classification of patients into identifiable groups that accurately reflect the use of resources in IRFs. The research to date indicates that CMGs are effective predictors of resource use as measured by proxies such as length of stay and cost. The use of these proxies is necessary because data that measure actual nursing and therapy time spent on patient care, and other resource use data, are not available. The collection of data on patient characteristics and patient-specific resource use may enhance our ability to refine the CMGs in a manner that supports our policy objectives for future refinement of the IRF prospective payment system. Accordingly, we have contracted with Aspen Systems Corporation to collect actual resource use data in a sample of IRFs. The data collected by Aspen will be submitted to RAND for analysis to determine if the data can be used to support future refinements to the CMGs.

IV. The IRF Patient Assessment

A. Implementation of a Patient Assessment Instrument

1. Statutory Authority and Proposed Rule

Under section 1886(j)(2)(D) of the Act, “The Secretary is authorized to require rehabilitation facilities that provide inpatient hospital services to submit such data as the Secretary deems necessary to establish and administer the prospective payment system under this subsection.” The collection of patient data is indispensable for the successful development and implementation of the IRF prospective payment system. A comprehensive, reliable system for collecting standardized patient assessment data is necessary for: (a) The objective assignment of Medicare beneficiaries to appropriate IRF CMGs; (b) the development of a system to monitor the effects of an IRF prospective payment system on patient care and outcomes; (c) the determination of whether future adjustments to the IRF CMGs are warranted; and (d) the development of an integrated system for post-acute care in the future.

2. Proposed Rule—Patient Assessment Instrument

In the November 3, 2000 proposed rule (65 FR 66315), we proposed to use the MDS-PAC as the standardized patient assessment instrument under the IRF prospective payment system (§§ 412.604(c) and 412.606). We acknowledged that the nature of the patient data we would collect may evolve over time. We stated our belief that the present structure of independent Medicare post-acute benefits, which includes payment systems, coverage requirements, and quality assessment instruments based primarily on site of care, may provide incentives that result in reduced access and choice for beneficiaries and may contribute to inappropriate care. We are continuing to reevaluate the methods we use to pay for the delivery of post-acute services, with the objective of developing an integrated approach. The use of post-acute care patient assessment instruments is one way to operationally advance an integrated

approach. We believe that MedPAC recognized the integrating function that post-acute care patient assessment instruments can play when, in its 1999 Report to Congress, MedPAC recommended that the Secretary collect a core set of patient assessment information across all post-acute care settings (Recommendation 5A).

As we strive to develop an integrated approach to the delivery of post-acute services, we are trying to implement MedPAC's March 2001 Report to Congress recommendation that the Secretary: (1) minimize reporting burden and needless complexity; and (2) assure that only the data necessary for payment and quality monitoring are collected (Recommendation 6B). We believe that the revised IRF patient assessment instrument contained in this final rule meets this MedPAC recommendation.

In the November 3, 2000 proposed rule, we proposed that only the IRF clinicians that we specified assess Medicare patients in IRFs using the MDS-PAC as the patient assessment instrument. We proposed that an IRF clinician assess a Medicare IRF patient on Day 4, Day 11, Day 30, and Day 60 of the patient's IRF stay, and also when the patient was discharged. We proposed that the patient assessment data for each of these assessments would be transmitted to us. In addition, we proposed to impose penalties on the IRF based on late completion of the MDS-PAC and late transmission of the MDS-PAC data.

As discussed in detail in section IV.B. of this preamble, based on the public comments received, we have decided to use a patient assessment instrument that is different from the MDS-PAC and is more similar to the UDSmr patient assessment instrument.

3. Public Comments Received on Proposed Use of MDS-PAC as the Patient Assessment Instrument

In the November 3, 2000 proposed rule, we sought public comment on the use of MDS-PAC as the assessment instrument for the IRF prospective payment system, including: comments and supporting data regarding the additional burden and cost, if any, associated with this instrument; the suitability of the instrument for the rehabilitation setting and as a model for other post-acute care settings; views on whether the instrument has been properly tested and validated for industry-wide use; and the utility and reliability of the quality data items contained in the instrument.

• We received numerous comments regarding our proposal to use the MDS-PAC as the patient assessment instrument. In general, the commenters stated that—

• We should use the UDSmr patient assessment instrument, commonly referred to as the “FIM,” instead of the MDS-PAC as the patient assessment instrument for the IRF prospective payment system;

• The MDS-PAC consisted of too many items;

• The reliability and validity of the items associated with monitoring quality of care had not been appropriately demonstrated;

• The FIM is as appropriate as the MDS-PAC to both classify patients into CMGs and monitor quality of care;

• The number of proposed patient assessments was excessive;

• The MDS-PAC item scoring scales for the FIM-like motor and cognitive items would contribute to errors scoring these items;

• The inconsistency of the item assessment time periods would detract from the accuracy of the assessment;

• An IRF's accreditation by JCAHO and CARF would be jeopardized or made unnecessarily burdensome and complicated if an IRF had to use the MDS-PAC;

• Clinicians other than those listed in the proposed rule should be allowed to certify that the assessment instrument had been properly completed;

• The list of the types of clinicians who could complete portions of the assessment should be expanded;

• The penalties associated with late completion or transmission of the MDS-PAC were too harsh;

• The policies for the IRF prospective payment system should only apply to patients admitted to an IRF after the system's implementation date; and

• More specifics regarding the assessment instrument test transmission should be given.

Below we give an overview of the patient assessment policies specified in the proposed rule, followed by a discussion of the public comments received and our response to those comments.

We have by no means abandoned our goal of ultimately establishing a common system to assess patient characteristics and care needs for all post-acute care services and pursing more integrated approaches to their payment and delivery. As we stated earlier, that goal was endorsed by MedPAC in its March 1999 Report to the Congress, in which MedPAC recommended that the Secretary collect a core set of patient assessment information across all post-acute care settings (Recommendation 5A).

In its March 2001 Report to Congress, MedPAC recommends that “The Secretary should develop for potential implementation a patient classification system that predicts costs within and across post-acute settings” (Recommendation 6C). We continue to share MedPAC's view of the utility of implementing a common patient assessment data system and a common patient classification system across post-acute settings. The implementation of these common systems would facilitate across post-acute settings consistency of payments, consistency of patient assessment burden, and consistency of quality of care monitoring. We believe that the assessment instrument set forth in this final rule will help achieve these goals.

The patient assessment instrument adopted in this final rule supports both our payment and quality objectives. In addition, we note that section 545 of BIPA requires the Secretary to report to Congress by January 1, 2005, on the development of standard instruments for the assessment of the health and functional status of patients, for items and services offered in all settings and to include in the report a recommendation on the use of such standard instruments for payment purposes. We believe that as a result of the study necessary to develop the report, we will make refinements in the design and application of our IRF patient assessment instrument. The refinements will provide us with even more essential information on which to base policy decisions related to post-acute care and its characteristics, including the quality of care furnished and our payment methods. We note that only Medicare Part A fee-for-service (original Medicare) IRF patients must be assessed by an IRF clinician using the patient assessment instrument.

In the proposed rule, we discussed our premise that the implementation of the per-case prospective payment system based on the “functional-related group” methodology requires the use of a standardized data collection instrument that contains the elements required to classify a patient into a distinct CMG. To classify a patient into a distinct CMG, the data collection instrument must first assign the patient into one of the various high level categories that are based principally on ICD-9-CM diagnoses plus some additional patient information. These high level categories are called Rehabilitation Impairment Categories (RICs). After that initial classification step, the level of the patient's impairment, as determined by the patient's motor and cognitive function

scores, and the age of the patient are used to classify a patient into a distinct CMG within the higher level RIC. How a patient's comorbidities may affect a patient's CMG is discussed in section VI. of this preamble. Additional data elements are required to identify the patient and for monitoring the quality of care furnished to patients in IRFs.

In the proposed rule, we indicated that we had explored several available approaches to the collection of the required data elements: These included: (a) The development of a new data collection instrument, the MDS-PAC (as discussed in the proposed rule); (b) the adoption of an instrument closely modeled on the UDSmr and the COS instrument; and (c) the incorporation verbatim into a new instrument (MDS-PAC) of the UDSmr/COS data elements that are relevant to payment. We indicated in the proposed rule that we proposed to use the first option, the MDS-PAC. We are referring readers to the November 3, 2000 proposed rule for a detailed description of the MDS-PAC instrument (65 FR 66304).

Comment:
We received many comments stating that the proposed MDS-PAC assessment instrument was too long and too complex. The commenters stated that the length and complexity of the patient assessment instrument create an unreasonable time burden in terms of performing the patient assessment. The unreasonable time burden in turn translated into excessive IRF patient assessment costs. The commenters urged us to use the FIM as the patient assessment instrument.

Response:
Our goal was to collect comprehensive patient assessment data, with that data being used to classify patients into payment groups and for quality of care purposes. However, after analysis of the public comments, we have decided to reconsider the number and complexity of patient assessment items and, therefore, are adopting in this final rule the use of a modified version of the UDSmr patient assessment instrument (FIM) as our patient assessment instrument (§§ 412.604(c) and 412.606(b)) rather than the MDS-PAC. We have decreased the number of assessment items and changed some of the FIM items in an effort to make them easier to understand and complete.

We recognized that many rehabilitation hospitals already use the FIM. Another organization known as Caredata.com used to market a patient assessment instrument that is very similar to the UDSmr patient assessment instrument. (We have been notified that, as of July 2000, Caredata.com discontinued the part of its business operations related to patient data analysis and reporting that was similar to the function UDSmr continues to perform for IRFs.) The FIM assessment system has been under development since the mid-1980s. The FIM was developed by researchers who were funded by a consortium of rehabilitation professional associations and the Department of Education at the State University of New York (SUNY) at Buffalo in the 1980s. The FIM is marketed by the UDSmr, maintained by SUNY/Buffalo, and is proprietary. There has been extensive training in and experience with the data elements, particularly the functional components, that enter into the construction of the CMGs. We believe that with a few modifications it can be the basis for a valid and reliable instrument to measure impairments in IRFs. The reliability and validity of using the FIM to assess IRF patients have been documented by a substantial list of publications produced both in the United States and overseas (for example, Sweden and Japan), by the developers of the system and by independent investigators. We also conducted a study of the FIM. We discuss the results of that study concerning the reliability and validity of the patient assessment instrument in section IV.E. of this preamble.

Many rehabilitation providers are clients of UDSmr. Our 1997 data show that approximately 68 percent of Medicare patients had a UDSmr or COS data file, indicating that these patients were assessed with the FIM. (We received comments indicating that currently approximately 85 percent of IRFs use the FIM. UDSmr also indicated that approximately 85 percent of IRFs currently use the FIM.)

The developers of the FIM offer a certification course to train assessors in the use of the instrument. This results in high rates of intrarater and interrater reliability, with Cronbach alpha coefficients of more than 0.9 for both the motor and cognitive subscores. The Cronbach alpha coefficient is a statistical measure of interrater reliability with perfect reliability equal to 1.0. Therefore, a score of 0.9 indicates a very high level of interrater reliability.

The principal objective of the FIM is to assess person-level disability in the inpatient medical rehabilitation setting. FIM data are collected at admission and discharge, and, when possible, 6 months after discharge. The strength of the FIM assessment instrument is that it is a well-evolved and extensively tested approach to the assessment of the critical components of care provided by IRFs and the measurement of patient improvement in functional capacity. The variations among facilities in the difference between the observed and expected improvement in function are used as indicators of the quality and the effectiveness of the facilities. UDSmr analyzes FIM data for providers and generates benchmark data that allow IRFs to compare the outcome of their performance on the functional independence measures relative to other providers participating in the system.

In sections VIII. and IX. of this final rule, we discuss in detail the burden of the use of a modified version of the FIM patient assessment instrument that we will use under the IRF prospective payment system.

Comment:
Many commenters stated that the item scoring scales for the FIM-like motor and cognitive items would cause errors in scoring these items, because the scoring scales were different from the FIM motor and cognitive items.

Response:
We have incorporated the actual FIM motor and cognitive items into our revised patient assessment instrument. Therefore, the scoring of these items will be exactly as currently done for these FIM items. In addition, in consultation with UDSmr staff, we made the coding of some other items on our patient assessment instrument as similar as possible to how the FIM motor and cognitive items are coded.

Comment:
One commenter requested a patient assessment item that would be used to collect speech-language data that are more descriptive of speech-language problems the patient may have.

Response:
Our patient assessment instrument is now a slightly modified version of the UDSmr patient assessment instrument. Consequently, we will be using the UDSmr assessment items to assess a patient's communication ability. As we state repeatedly in this preamble, we want to limit the burden on IRFs. Therefore, we are being parsimonious in what items are added to the UDSmr instrument, and are only adding items that clearly increase the capability of our instrument to classify a patient into a CMG or items that clearly collect needed and proven quality of care data. At this time, we do not have data that clearly indicate the value of changing the UDSmr communication assessment category of items.

Comment:
Several commenters stated that the inconsistency of assessment time periods for different patient assessment instrument items would detract from the accuracy of the patient assessment. The different item assessment time periods would create confusion about how to perform the

assessment and create an additional assessment burden.

Response:
In the proposed rule, we specified that the item we proposed to use to assess “Indicators of Delirium-Periodic Disordered Thinking/Awareness” requires an assessment time period that is 7 calendar days in length. We also specified that the items we proposed to use to assess “Bladder Continence” and “Bowel Continence” each requires an assessment time period that is 7 to 14 calendar days in length. We stated that we would conduct additional testing of the MDS-PAC to determine if the assessment time period for these items should be changed. In addition, we stated that, if the additional testing indicated that the assessment time periods for these items should not be changed, we would make appropriate changes to the patient assessment schedule.

We conducted testing of both the MDS-PAC and the UDSmr patient assessment instrument. Our additional testing confirmed that the assessment time periods for the bowel and bladder items should, in some cases, remain as long as 14 calendar days in length. In addition, we consulted with UDSmr staff regarding the assessment time period for the bladder and bowel items in the FIM, because the algorithms for these items indicate an assessment time period as long as 14 days. UDSmr staff recommended that the assessment time period for the bladder and bowel items remain as long as 14 days.

Our patient assessment instrument is a slightly modified version of the UDSmr patient assessment instrument, and contains all 18 of the UDSmr patient assessment instrument functional independence measures that are used to measure both motor and cognitive functioning. Therefore, in accordance with the public comments that recommended we make the assessment time periods for our patient assessment instrument items consistent, and in recognition of the assessment time periods used for the items in the UDSmr patient assessment instrument, in this final rule we are requiring that the assessment time period for all of our patient assessment instrument items is 3 calendar days, except for some items as discussed below. We are not including in our assessment instrument the MDS-PAC item “Indicators of Delirium-Periodic Disordered Thinking/Awareness.” Our additional testing did not confirm that this MDS-PAC item was as valid or reliable as our earlier testing indicated.

In general, the proposed rule specified an admission assessment time period that covers calendar days 1 through 3 of the patient's current IRF hospitalization, and an assessment reference date that is the third day of the admission assessment time period. These 3 calendar days are the days during which the patient's clinical condition would be assessed so that the clinical, as opposed to demographic, data that are required on the patient assessment instrument can be collected. In addition, these 3 calendar days must be days during which the patient was furnished Medicare Part A fee-for-service inpatient rehabilitation services. In this final rule, for the admission assessment, we are retaining the general guideline that the assessment reference date is the third calendar day of the admission assessment time period. However, we believe that it may be necessary to allow additional time to assess certain items in order to most appropriately capture patient information to facilitate the payment and quality of care monitoring objectives of our IRF patient assessment instrument. Our item-by-item guide will provide specific guidelines on the observation period for individual items. We note that the UDSmr coding manual allows for an admission assessment time period for some items that is longer than 3 calendar days.

Specifically, clinical experience may indicate the optimal clinical assessment of the activity covered by an item would be more accurately obtained by using a longer assessment time period. Consequently, for a given patient assessment item, the item-by-item guide may specify an assessment time period that is longer than the general guideline of the first 3 calendar days of the patient's current hospitalization. In that situation, the IRF may use information from a variety of sources to assess the patient's clinical condition for the time period that is prior to the patient's current IRF hospitalization. The other sources could be one or more of the following: (1) The patient's physician; (2) the patient's clinical record if the patient is coming directly from an acute care hospital or a SNF; (3) the medical record maintained by an HHA if the patient was being furnished services by an HHA immediately prior to the IRF hospitalization; (4) information obtained from the patient's family or someone who has personal knowledge of the patient's clinical condition; or (5) information obtained from the patient. For example, in order to perform the optimal clinical assessment for item “X”, the admission assessment time period may need to be 7 calendar days. Therefore, in this example, the IRF would assess that item using data collected during the first 3 calendar days of the patient's current IRF hospitalization, and for the other 4 calendar days preceding the admission use data gathered from one or more of the specified other sources.

We believe that only one set calendar day should be the assessment reference date. In the example situation above, in order to have only one assessment reference date, the assessment reference date would remain being the third calendar day of the patient's current IRF hospitalization, but the span of calendar days for the admission assessment time period would be 7 calendar days with respect to that item.

The discharge assessment may also have items that require an assessment time period longer than 3 calendar days. If the patient has not been an IRF patient during the time period covered by this longer assessment time period, the IRF may obtain the data for these items using one of more of the sources specified above.

In this final rule, we are adopting the proposed provision that, for the discharge assessment, the assessment reference date is the day that the first of either of the two following events occurs: (1) The patient is discharged from the IRF; or (2) the patient stops being furnished Medicare Part A inpatient rehabilitation services, which includes the situation when a patient dies. In general, we are adopting the proposed rule provision that the assessment time period will be the 3 calendar days immediately prior to the assessment reference date. However, similar to the admission assessment, the assessment time period for some items for the discharge assessment will be different than the 3 calendar days prior to the assessment reference date. In addition, for the discharge assessment, in no case will the discharge assessment time period include a calendar day(s) prior to the admission assessment reference calendar date or the admission assessment reference calendar date itself. For example, a patient admitted on July 1, 2002, will have an admission assessment reference date of July 3, 2002. If that patient is either discharged from the IRF or stops being furnished Medicare Part A inpatient rehabilitation services on July 12, 2002, the discharge assessment reference date is July 12, 2002. In this case, the discharge assessment time period for any of the items will not be the time period prior to or include July 3, 2002. Otherwise, we would be capturing data already recorded on the admission assessment. The goal of the discharge assessment is to obtain motor and cognitive data for the time period between the admission

assessment and the discharge assessment.

In the final rule, for admission assessments, we are adopting the proposed assessment completion date of 1 calendar day after the assessment reference date. For discharge assessments, the completion date is the 5th calendar day in the period beginning with the assessment reference date. Charts 1, 2, and 3 and the accompanying discussion of the charts in section IV.D. of this preamble further illustrate the application of the assessment reference date and other associated patient assessment schedule dates.

Comment:
Several commenters stated that they used the FIM to comply with the accreditation process administered by either the Joint Commission on Accreditation of Healthcare Organizations (JCAHO) or the Commission on Accreditation of Rehabilitation Facilities (CARF). These commenters believed that substituting the MDS-PAC for the FIM as the patient assessment instrument would jeopardize their accreditation that was based on use of the FIM. The commenters stated it would be burdensome if they had to use the MDS-PAC and the FIM to satisfy both our requirements and the requirements of JCAHO and CARF.

Response:
The patient assessment instrument that we are adopting in this final rule incorporates the majority of the UDSmr patient assessment instrument items. Therefore, we believe that use of our assessment instrument contains the same motor and cognitive items that IRFs need to maintain their JCAHO or CARF accreditation.

Comment:
Several commenters stated that our proposed list of clinicians who would be authorized to sign the patient assessment instrument attesting to the completion and accuracy of the data recorded in the assessment instrument was too restrictive. They believed that additional types of clinicians should be authorized. However, the commenters believed that no clinician should have to attest to the accuracy of the data recorded for each item, because it would normally be difficult or impossible for a clinician to verify the accuracy of the data recorded by one or more other clinicians during the time period we proposed to allow for completion of the assessment instrument.

Several commenters stated that the type of clinician who was authorized to complete a portion of our assessment instrument should be expanded to include several other types of clinicians.

Response:
In this final rule, we are using a patient assessment instrument that is a modified version of the UDSmr patient assessment instrument. The UDSmr patient assessment instrument does not have an attestation section. Therefore, we are not including the attestation section in our patient assessment instrument in order to increase the similarity between the two assessment instruments. We are revising proposed § 412.606 in these final regulations to remove the attestation provisions.

In addition, because we are using a slightly modified version of the UDSmr patient assessment instrument, we will follow UDSmr's item coding format. The data for the UDSmr patient assessment instrument items can be collected and recorded on the instrument by any clinician trained in how to collect and record the data. Therefore, we have decided to allow any clinician who is employed by the IRF or is a contract clinician of the IRF, and who has been trained in how to perform a patient assessment using our assessment instrument, to perform a patient assessment and record data for any item on the patient assessment instrument. Similar to UDSmr, we believe that any clinician who has been properly trained in collecting the patient assessment data is capable of satisfactorily collecting the data. The IRF will be responsible for ensuring that the data recorded by any clinician of the IRF on the patient assessment instrument are accurate and complete and in accordance with the policies contained in these final regulations (§ 412.606(c)(1) and (2)).

B. The Patient Assessment Process

As discussed in section IV.A. of this preamble, we are requiring that IRFs use our IRF patient assessment instrument to collect data on Medicare patients being furnished care in IRFs. In the proposed rule, we did not state specifically that Medicare Part A fee-for-service patients are the only Medicare patients that must be assessed using the CMS patient assessment instrument. Therefore, in this final rule, for clarity we are stating that Medicare Part A fee-for-service patients are the only Medicare patients that must be assessed using our IRF patient assessment instrument. Our IRF patient assessment instrument consists of nine sections, each to collect different categories of patient information. These categories include identification and demographic information about the patient, medical information, and information related to quality of care and basic patient safety. Appendix B of this final rule contains the CMS IRF patient assessment instrument. However, our IRF patient assessment instrument must be approved by the Office of Management and Budget (OMB) prior to its use. Therefore, we may be required to make changes to the patient assessment instrument while the instrument is undergoing the OMB approval process. After the patient assessment instrument is approved by OMB, we will make it available on the IRF prospective payment system website (www.hcfa.gov/medicare/irfpps.htm). (In the proposed rule, we included an item-by-item guide for the proposed MDS-PAC patient assessment instrument. Because we are changing the patient assessment instrument from the proposed MDS-PAC to a modified version of the UDSmr patient assessment instrument, we will need to develop additional instructions to supplement the UDSmr guide.)

The additional instructions supplementing the UDSmr guide will, in effect, be our draft item-by-itself guide to the IRF patient assessment instrument. Once the IRF patient assessment instrument is approved by OMB, we will submit the draft item-by-item guide to OMB for public review and comment, in compliance with the Paperwork Reduction Act of 1995 (PRA). When we submit the draft item-by-item guide to OMB for public review and comment, we will place it on the IRF prospective payment system website specified above. We anticipate that this draft item-by-item guide will be available for review and comment beginning September 2001. We will be providing appropriate training on the IRF patient assessment instrument and the item-by-item guide, after both the issuance of this final rule and OMB approval of the patient assessment instrument and the item-by-item guide.

IRFs must computerize and electronically report the patient assessment data (§ 412.614). Each year tens of thousands of Medicare patients are treated in IRFs. As discussed in more detail later in section IV.D. of this preamble, each Medicare Part A fee-for-service patients will be assessed two times by an IRF clinician using our inpatient rehabilitation facility patient assessment instrument. Therefore, there will be a large quantity of data collected and submitted to us each year. As a result, it would be unrealistic for us to perform a meaningful analysis of this large amount of data for payment, medical review, and quality monitoring purposes in the absence of the capability to use automated data collection. An analysis of IRF patient assessment data would allow us to use the data in a manner similar to how we use SNF patient assessment data. (See 42 CFR 413.343 and 483.20 and the July

30, 1999 SNF prospective payment system final rule (64 FR 41644).)

One use of SNF patient assessment data is to support quality of care monitoring. The SNF patient assessment data is reliable and effective in supporting early identification of potential quality of care problems. Early identification, in turn, helps to focus the survey process on these identified problem areas.

Using SNF patient assessment data, we have developed indicators of the quality of care in SNFs. These quality of care indicators are used for internal quality improvement and public reporting to help beneficiaries make more informed decisions. The quality of care indicators are also used to support analytical evaluations of the quality of services that SNFs furnish. For example, we use MDS data to provide us with objective and detailed measures of the clinical status and care outcomes of residents in a SNF. In addition, quality of care indicators can be used to analyze the relationship between Medicare policy changes and quality of care.

Computerization of the IRF patient assessment data makes it easier and more practical for an IRF to use the patient assessment data to classify a patient into a CMG. Electronic transmission of the patient assessment data by the IRF makes the creation of an IRF patient assessment database feasible. That database, in turn, permits the data to be accessed easily in various formats for different analytical purposes, which can be used to support the Medicare program's fraud and abuse efforts, for medical review purposes, and for uses similar to how the SNF MDS data are used.

Beginning on January 1, 2002, for Medicare Part A fee-for-service patients, IRFs must collect patient assessment data using the CMS IRF patient assessment instrument as part of the IRF's inpatient assessment process. This data collection requirement applies to Medicare beneficiaries who are already inpatients as of January 1, 2002, as well as beneficiaries admitted as inpatients on or after January 1, 2002 (§ 412.606(b)). In addition, IRFs must use our patient assessment instrument to assess inpatients in accordance with the assessment schedule discussed in section IV.D. of this preamble and specified in § 412.610(c).

The IRFs must encode the patient assessment data by entering the data into a computer software program that we will provide at no charge to IRFs (§ 412.614(a)). The patient assessment data records will be considered “locked” when they have passed all of our specified edits and are accepted by the IRF patient assessment database to which the IRF transmitted its records.

IRFs also must maintain all completed Medicare patient assessments that were performed using the CMS IRF patient assessment instrument for the previous 5 years, either in a paper format in the patient's clinical record or in an electronic computer file format that can be easily obtained (§ 412.610(f)). We are imposing this requirement because the assessments may be needed as part of a retrospective review conducted at the IRF for various purposes (for example, as part of the documentation that the IRF used to determine the medical necessity of the Medicare-covered services the IRF furnished). Also, completed patient assessments that are available at the IRF could be beneficial to other entities that appropriately have access to these records (for example, a State or Federal agency conducting an investigation due to a complaint of patient abuse or a suspicion of fraud). In addition, retention of the patient assessment instrument by the IRF will provide a backup to the electronic database.

We will use data from the initial patient assessment to classify patients into a CMG (§ 412.620(a)(3)). The CMG determines the base payment rate that the IRF receives for the Medicare-covered Part A services furnished by the IRF during the Medicare beneficiary's episode of care.

IRFs must complete a successful transmission of test patient assessment data to us by a date that we will specify in program instructions. A successful transmission by the IRFs of test data to us is necessary to determine connectivity with the system and to identify any transmission problems. Our system will transmit a test data feedback report to each IRF indicating that the test data transmission was either completely successful or experienced problems. Problems will be specified in the test data transmission report.

We will provide training and technical support to the IRFs on administering and completing our IRF patient assessment instrument, as well as transmitting the data.

C. Documentation Requirements for the Patient Assessment

The admission patient assessment will be used to classify each Medicare Part A fee-for-service patient into a CMG, and the CMG will be used to determine the IRF payment. While the admission assessment is used to place a patient in a CMG, the discharge assessment is used to determine the relevant weighting factors, if applicable, associated with comorbidities. Section VI. of this preamble discusses comorbidities. One principle governing appropriate Medicare payment and utilization of Medicare inpatient services is that there must be documentation establishing that the inpatient services furnished to a patient meet the requirements set forth in section 1862(a) of the Act (for example, are reasonable and necessary for the diagnosis or treatment of illness or injury) (§ 412.606(a) and (c)).

When the data recorded on the patient assessment instrument accurately reflect the patient's clinical status, they form the basis for documenting that services furnished to the IRF Medicare inpatient are reasonable and necessary. There may be cases in which we raise questions about the accuracy of the recorded patient assessment items and, by extension, the associated medical necessity of the services that the IRF furnished. In these cases, other provider documentation may be examined to verify the information recorded on the patient assessment instrument. Other documentation that will support the accuracy of the recorded data (and the medical necessity for the services furnished to the inpatient) must be recorded in the patient's medical record and could include, but is not limited to: (1) Physician's orders; (2) physician's notes; (3) nursing notes; (4) notes from therapists; (5) diagnostic tests and their results; and (6) other associated information, such as social worker or case manager notes.

A patient's clinical status for a given time period, as indicated by the completed patient assessment instrument, must be verifiable and consistent with the clinical information independently or separately recorded in the patient's clinical record. Otherwise, inaccurately completed patient assessments might be used to classify patients into CMGs that would, in turn, form the basis for Medicare payment for medically inappropriate or unnecessary services.

Facilities must transmit each Medicare inpatient's patient assessments to us, and submit claims for Medicare payment to the fiscal intermediary, in accordance with the Medicare Part A claims processing procedures. Payment to the IRF will be made according to the CMG recorded on the claim sent to the fiscal intermediary.

D. Patient Assessment Schedule and Data Transmission

In the November 3, 2000 proposed rule, we discussed our proposal to implement the patient assessment instrument as part of the IRF prospective payment system. We

included a discussion of the patient assessment schedule; what assessment items would be collected on each assessment; the penalties for late completion of assessments; the computerization of the patient assessment data; the transmission of the patient assessment data, including the late transmission penalty; and the patient assessment instrument computer software that would be required to be used.

1. Assessment Schedule

In the proposed rule, we stated that we were proposing to require that a Medicare patient be assessed at Day 4, Day 11, Day 30, and Day 60 of his or her IRF stay, and also when the patient either is discharged from the IRF or stops receiving Medicare Part A inpatient rehabilitation services (65 FR 66325 and 66326 and proposed § 412.610(c)). Given that the mean length of stay in an IRF is 15.81 days (median length of stay is 14 days), we solicited comments in the November 3, 2000 proposed rule on the benefits of mid-stay assessments, that is, the Day 11, Day 30, and Day 60 assessments. We noted that the IRF stay of a small percentage of patients is over 30 days, and an even smaller percentage of patients stay over 60 days.

In proposed § 412.602, we proposed that an interrupted stay is one in which an IRF patient is discharged from the IRF and returns to the same IRF within 3 consecutive calendar days. In counting the 3 calendar day time period to determine the length of the interruption of the stay, the first day of the start of the interruption of the stay is counted as “day 1,” with midnight of that day serving as the end of that calendar day. The 2 calendar days that immediately follow would be days 2 and 3. If the patient returns to the IRF by midnight of the third calendar day, the patient would be determined to have had an interrupted stay of 3 calendar days or less. We are adopting as final the definition of interrupted stay as proposed, with further clarification that an interruption is 3 consecutive calendar days that begins with the day of discharge and ends on midnight of the third day.

We indicated that when a patient has an interrupted stay, the interrupted stay must be documented on the assessment instrument interrupted stay tracking form. The data recorded on the interrupted stay tracking form must be transmitted to our patient data system within 7 calendar days of the date the patient returns to the IRF.

We proposed that when an interruption of a patient's IRF stay occurs, it may affect the assessment reference dates, completion dates, encoding dates, and transmission dates.

Comment:
We received numerous comments stating that the proposed number of assessments was excessive and created an undue burden on the IRF. The commenters stated that they believed that assessing patients only upon the patient's admission and discharge to the IRF was sufficient to fulfill our payment classification and quality of care monitoring goals. Some of the commenters emphasized that the UDSmr patient assessment system requires patient assessment only upon the patient's IRF admission and discharge.

Response:
As described more fully in the proposed rule, we believe that a patient assessment at one or more points between a patient's admission and discharge would yield valuable quality of care monitoring data. However, after analyzing the public comments that stated that our proposed method was an undue time burden, we are making changes to reduce the burden associated with our proposed assessment schedule. In this final rule, we are requiring the completion of the patient assessment instrument only upon the patient's admission and discharge, for a total of two assessments (§ 412.610(c)).

In addition to requiring the completion of the patient assessment instrument upon only the patient's admission and discharge, in section IV.D.2. of this final rule, we are specifying that patient assessment data for both the admission and discharge assessment are to be transmitted only once and at the same time (§ 412.614(c)). Thus, there will be only one transmission of all of the patient assessment data. To be consistent with the time requirement for transmission of the patient admission and discharge assessment data, we also are requiring that the interruption in stay data be transmitted only at the same time that the admission and discharge assessment data is transmitted (§ 412.618).

We agree with the commenters who stated that, by collecting IRF patient assessment data only upon the patient's admission and discharge (as approximately 85 percent of IRFs that subscribe to the UDSmr patient assessment system currently do), we can achieve our goals of appropriately classifying a patient into a CMG, and at the same time monitor the quality of care furnished to the IRF patient. In our proposed rule, we stated that we believed that in order to monitor the quality of care furnished to a patient, we needed patient data collected between the admission and discharge assessments. However, we agree with the commenters that obtaining data for quality of care monitoring, using the method employed by approximately 85 percent of IRFs that our data indicate subscribe to the UDSmr patient assessment system, will be sufficient to meet our quality of care monitoring goal. We note that the IRF prospective payment system is a discharge-based system that pays based on the entire episode of the IRF stay. That is in contrast to the SNF prospective payment system which, because it is a per-diem based payment system, needs to have more frequent patient assessment data in order to evaluate if the prior per-diem payment rate that was previously determined based on patient assessment data is still appropriate.

Patient Assessment Instrument Dates Associated with the Admission Assessment.
The following Charts 1 and 2 and the accompanying discussion illustrate application of the final patient assessment schedule and associated assessment reference date, assessment instrument completion date, assessment instrument encoding date, and assessment instrument transmission date to the admission assessment.

Chart 1.—Patient Instrument Admission Assessment Schedule and Associated Dates

Assessment type
Hospitalization time period and observation time period
Assessment reference date
Patient assessment instrument must be completed by:
Payment time covered by this assessment:
Patient assessment data must be encoded by:
Patient assessment instrument data must be transmitted by:**

Admission assessment
First 3 days
Day 3*
Day 4
Entire Medicare Part A stay time period
Day 10
See ** below for how to calculate this date.

* Except for some items, as discussed previously in section IV.A.3. of this preamble.

** Because all the assessment data for admission and discharge assessments must be transmitted together after the patient is discharged or stops receiving Medicare Part A services, the admission assessment data must be transmitted at the same time the discharge data are transmitted. That transmission date is by the 7th calendar day in the period beginning with the last permitted
discharge
patient assessment instrument “encoded by” date.

Chart 2.—Example Applying the Patient Assessment Instrument Admission Assessment Schedule and Associated Dates

Assessment type
Hospitalization time period and observation time period
Assessment reference date
Patient assessment instrument must be completed by:
Patient assessment instrument data must be encoded by:
Patient assessment instrument data must be transmitted by:**

Admission assessment
First 3 days (Patient admitted on 7/3/02)
* 7/5/02
7/6/02
7/12/02
See ** below for how to calculate this date.

* Except for some items, as discussed previously in section IV.A.3. of this preamble.
** If the patient is discharged on 7/16/02, the last permitted discharge patient assessment instrument encoding date is 7/26/02, and the admission and discharge assessment data must be transmitted by 8/01/02. See Chart 3 that illustrates how to apply the patient assessment instrument discharge dates. Note that the span of time to complete the admission assessment is different from the time to complete the discharge assessment as discussed in this section IV.D. of the preamble.

Each Medicare Part A fee-for-service patient must be assessed by a clinician(s) using our IRF patient assessment instrument to perform a comprehensive assessment according to the schedule specified above. More than one clinician may contribute to the completion of the patient assessment instrument. We believe that the accuracy of the assessment would be enhanced if the data collected for a patient assessment item were collected by a clinician with specialized training and experience in the area of the data being collected. For example, although a registered nurse could fully assess all aspects of a patient and collect all the patient assessment instrument data, a physical therapist or an occupational therapist has the specialized training that may contribute to a more accurate assessment of some neuromuscular items. Our objective is to have data collected that would best reflect the patient's unique circumstances and clinical status during the assessment observation period, considering the accuracy of patient assessment is contingent on the training and experience of the clinician assessor.

In Chart 6.—Critical Patient Assessment Items in section V.D. of this preamble, we specify the patient assessment instrument items that will be used to classify a patient into a specific CMG.

If an interruption of 3 calendar days or less occurred for the admission assessment observation time period (for example, the days specified in the “Hospitalization Time Period and Observation Time Period” column in Charts 1 and 2 illustrated previously), the associated assessment reference date, patient assessment instrument completion date, patient assessment instrument encoded by date, and patient assessment instrument transmitted by date for the admission assessment would be shifted forward by the number of days that the patient was not an inpatient of the IRF. We refer to Chart 2 to help guide the reader during our discussion of the shifting forward of dates. With regard to the admission assessment, assume that the patient's stay began with admission to the IRF on July 3, 2002, but was interrupted on July 4, 2002, which would be day 2 of the patient's IRF hospitalization. The patient returned to the same IRF prior to midnight of July 6, 2002, and had an interrupted stay of 3 calendar days. The assessment reference date observation time period for the admission assessment would be shifted to July 6, 7, and 8. (Without the interrupted stay, the admission assessment reference date observation time period would have been July 3, 4, and 5, with the assessment reference date being July 5, 2002.) Because of the interruption in stay, the admission assessment reference date would be reset to July 8, 2002. The admission assessment completion date would be reset to July 9, 2002. The admission assessment “patient assessment instrument must be encoded by” date would be reset to July 15, 2002. The admission assessment “patient assessment instrument must be transmitted by” date would be reset to a date calculated according to the footnote for the “patient assessment instrument must be transmitted by” column in Chart 2.

In the final rule, we are revising proposed § 412.610 to specify under paragraph (c)(1) the admission assessment reference dates and the admission assessment completion dates.

Patient Assessment Instrument Dates Associated with the Discharge Assessment.
In this final rule, we are revising proposed § 412.610(c) to specify under paragraph (2) that the assessment reference date for the discharge assessment is the actual day that one of two events occurs first: (1) The day on which the patient is discharged from the IRF; or (2) the day on which the patient ceases to receive Medicare-covered Part A inpatient rehabilitation services. Note that the day the patient ceases to receive Medicare-covered Part A inpatient rehabilitation services includes a situation when a patient dies. The discharge assessment is performed only at the first point in time that either of these events occurs. There may be cases when a patient ceases receiving Medicare Part A inpatient rehabilitation services, but is not discharged from the IRF.

After the assessment reference date for the discharge assessment is determined, the completion date for the discharge assessment must be set. We are revising proposed § 412.610(c) to include under paragraph (2)(i)(B) that the completion date for the discharge assessment is the 5th calendar day that follows the discharge assessment reference date with the discharge assessment reference date itself being counted as the first day of the 5 calendar day time period. To determine the 5th calendar day, the discharge assessment reference date is counted as day 1 of the 5 calendar days. For example, if the assessment reference date is July 16, 2002, the completion date would be July 20, 2002.

We are not using the method used to determine the completion date for the admission assessment to determine the completion date for the discharge assessment.

The reason for using a different method to determine the discharge completion date is because of the

definition of an interrupted stay. Previously, we specified that, after the patient returns to the IRF after an interrupted stay, another admission assessment is not performed, and the CMG into which the patient classified prior to starting the interrupted stay is still in effect. Therefore, in order to ensure that a clinician does not perform a discharge assessment on a patient who meets the criteria of an interrupted stay, it is necessary to make the completion date of the discharge assessment a date that exceeds the interrupted stay defined time period. This safeguard prevents the performance of unnecessary discharge assessments by the IRF.

In addition, any discharge assessment that is transmitted to the CMS patient data system is used by the system to indicate that a patient is no longer hospitalized in the IRF. Therefore, if a discharge assessment that is associated with an interrupted stay is transmitted to our patient data system, it would result in our patient data system rejecting the subsequent true discharge assessment that would be transmitted when the patient is actually discharged or stops being furnished Medicare Part A inpatient rehabilitation services.

We are revising proposed § 412.610 to remove the contents of paragraph (d) that reference penalties for late completions (as discussed in section IV.D.4. of this preamble); to remove from paragraph (e) the provisions on assessment completion dates (which are now under paragraph (c)); and to specify under new paragraph (d) only encoding dates. (As conforming changes, proposed paragraphs (f) and (g) are redesignated as paragraphs (e) and (f), respectively.)

We are providing that the discharge assessment “must be encoded by date” is the 7th calendar day in the period beginning with the determined discharge completion date. To determine the 7th calendar day, count the discharge assessment completion date as day 1 of the 7 calendar days. For example, if the discharge assessment completion date is July 20, 2002, the assessment must be encoded by date would be July 26, 2002.

In this final rule, we also are revising proposed § 412.614(c) to specify that the discharge assessment “must be transmitted by date” is the 7th calendar day in the period beginning with the discharge assessment “must be encoded by date”. To determine the 7th calendar day, count the discharge assessment “must be encoded by date” as day 1 of the 7 calendar days. For example, if the discharge assessment “must be encoded by date” is July 26, 2002, the assessment “must be transmitted by date” would be August 1, 2002.

Chart 3 below illustrates the discharge assessment dates discussed above:

Chart 3.—Example Applying the Patient Assessment Instrument Discharge Assessment Dates

Assessment type
Discharge date *
Assessment reference date
Assessment Instrument must be completed on:
Assessment instrument data must be encoded by:
Assessment instrument data must be transmitted by:

Discharge assessment
* 7/16/02
** 7/16/02
7/20/02
7/26/02
8/01/02

* This is either: (1) The day the patient is discharged from the IRF; or (2) the day the patient ceases receiving Medicare-covered Part A inpatient rehabilitation services.
** Except for some items, as discussed previously in section IV.A.3. of this preamble.

Comment:
Some commenters believed that the IRF prospective payment system policies should only apply to patients admitted to an IRF on or after the implementation date of the IRF prospective payment system. They did not believe that the IRF prospective payment system policies should apply to patients who were admitted prior to implementation of IRF prospective payment system, and are still patients on the day the IRF prospective payment system is effective.

Response:
Because the IRF prospective payment system is a discharge-based system, payment is made to the IRF based on the entire episode of stay of the patient in the IRF. Therefore, any IRF that discharges any patient after the IRF prospective payment system is implemented must be paid according to the IRF prospective payment system policies. Consequently, we are adopting as final the “Assessment Rule to Use if Medicare Beneficiaries Are Receiving IRF Services on the Effective Date of the Regulation” policy (65 FR 66328) we proposed in the proposed rule.

2. Data Items To Be Collected

In the proposed rule, we specified a list of data items that we were proposing to be collected for Day 4, Day 11, Day 30, and Day 60 of an admission and at discharge (65 FR 66328-66330).

Comment:
As stated previously, many commenters urged us to use the FIM as the patient assessment instrument. In addition, the commenters urged us to collect the patient assessment data according to the same schedule as the UDSmr uses for the FIM.

Response:
In sections IV.A. and B. of this preamble, we state that the patient assessment instrument we are adopting in this final rule is more similar to the UDSmr patient assessment instrument. We also state under this final rule that we are requiring IRFs to collect patient assessment data in a manner similar to how the UDSmr patient assessment data are collected, that is, only upon the admission and discharge of the patient. However, as we specified in the proposed rule (under proposed § 412.610(c)(5)) and as we are adopting in this final rule under § 41

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Source: Frix Law Library, https://www.frixlaw.com/law-library/documents/fr%3A01-19313. Public record. Not legal advice.
