# 50 Ill. Adm. Code 4540.50: Section 4540.50 Material Changes to a Network

> Illinois · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_50

## Section

- **Citation:** 50 Ill. Adm. Code 4540.50
- **Heading:** Section 4540.50 Material Changes to a Network
- **Jurisdiction:** Illinois
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Illinois Administrative Code / Title 50 INSURANCE / CHAPTER I: DEPARTMENT OF INSURANCE / Part 4540 NETWORK ADEQUACY AND TRANSPARENCY / Section 4540.50 Material Changes to a Network

## Text

Section 4540.50  Material
Changes to a Network
a)         Within 15 days after any material change in an approved
network plan, an insurer must submit a material change filing.  The insurer
shall submit a revised version of the most recent network adequacy filing
described in Section 4540.40 based on the material change and shall identify
the SERFF Tracking Number of the annual filing that the material change filing
is updating.  The material change filing must show the changes for each
document that was revised from the annual filing and must ensure that any exemptions
requested under Section 10(g) of the Act account for the material change.
Including when a major health system is removed from a network, an insurer is
only required to submit information related to the provider specialty type or
types affected by the material change and, unless the network as a whole
experienced a 10% reduction, only in the county or counties where beneficiaries
were affected by the material change.  Material change filings do not need to
include any documents described in Section 4540.40(k) through (o) or (s).
b)         An insurer may request a 15-day extension to submit the
filing described in this Section if, by the original deadline, the insurer
reports to the Department the specific triggers for the material change, the
provider specialty types known to be affected, the counties known to be
affected, and the aggregate number of current beneficiaries affected.  The
Department will not unreasonably withhold approval of an extension satisfying
these criteria.

## Nearby sections

- [50 Ill. Adm. Code 4540.10 Section 4540.10  Purpose and Scope](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_10.md)
- [50 Ill. Adm. Code 4540.20 Section 4540.20  Applicability](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_20.md)
- [50 Ill. Adm. Code 4540.30 Section 4540.30  Definitions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_30.md)
- [50 Ill. Adm. Code 4540.40 Section 4540.40  Filing Procedures](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_40.md)
- [50 Ill. Adm. Code 4540.50 Section 4540.50  Material Changes to a Network](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_50.md)
- [50 Ill. Adm. Code 4540.60 Section 4540.60  Provider Directory Audits](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_60.md)
- [50 Ill. Adm. Code 4540.70 Section 4540.70  Notice of Nonrenewal or Termination](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_70.md)
- [50 Ill. Adm. Code 4540.80 Section 4540.80  Confidentiality](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_80.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T50_P4540_S4540_50. Check the current official text before relying on it. Not legal advice.