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Title 42

Displaying title 42, up to date as of 7/16/2026. Title 42 was last amended 7/01/2026.
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Title 42Public HealthPart / Section
Chapter IVCenters for Medicare & Medicaid Services, Department of Health and Human Services400 – 699
Subchapter BMedicare Program405 – 429
Part 407Supplementary Medical Insurance (SMI) Enrollment and Entitlement407.1 – 407.62
Subpart AGeneral Provisions407.1 – 407.4
§ 407.1Basis and scope.
§ 407.2General description of program.
§ 407.4Basic requirements for entitlement.
Subpart BIndividual Enrollment and Entitlement for SMI407.10 – 407.32
Subpart CState Buy-In Agreements407.40 – 407.50
§ 407.40Enrollment under a State buy-in agreement.
§ 407.42Buy-in groups available to the 50 States, the District of Columbia, and the Northern Mariana Islands.
§ 407.43Buy-in groups available to Puerto Rico, Guam, the Virgin Islands, and American Samoa.
§ 407.47Beginning of coverage under a State buy-in agreement.
§ 407.48Termination of coverage under a State buy-in agreement.
§ 407.50Continuation of coverage: Individual enrollment following end of coverage under a State buy-in agreement.
Subpart DPart B Immunosuppressive Drug Benefit407.55 – 407.62
§ 407.55Eligibility to enroll.
§ 407.57Part B-ID benefit enrollment.
§ 407.59Attestation.
§ 407.62Termination of coverage.