# 42 C.F.R. § 408.3 (2026): Definitions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_3

## Section

- **Citation:** 42 C.F.R. § 408.3 (2026)
- **Heading:** Definitions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 42 CFR: Public Health / Chapter IV: CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES / Part 408: PREMIUMS FOR SUPPLEMENTARY MEDICAL INSURANCE / Subpart A: General Provisions / § 408.3: § 408.3   Definitions.

## Text

As used in this part, unless the context indicates otherwise—
Enrollee
means an individual who is enrolled in the SMI program under Medicare Part B.
Taxable year
means the 12-month period (calendar or fiscal year) for which the individual files his or her income tax return.

## Nearby sections

- [42 C.F.R. § 408.1 (2026) § 408.1   Statutory basis.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_1.md)
- [42 C.F.R. § 408.2 (2026) § 408.2   Scope and purpose.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_2.md)
- [42 C.F.R. § 408.3 (2026) § 408.3   Definitions.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_3.md)
- [42 C.F.R. § 408.4 (2026) § 408.4   Payment obligations.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_4.md)
- [42 C.F.R. § 408.6 (2026) § 408.6   Methods and priorities for payment.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_6.md)
- [42 C.F.R. § 408.8 (2026) § 408.8   Grace period and termination date.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_8.md)
- [42 C.F.R. § 408.10 (2026) § 408.10   Claim for monthly benefits pending concurrently with request for SMI enrollment.](https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_10.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T42_P408_S408_3. Check the current official text before relying on it. Not legal advice.