42 C.F.R. § 423.900 Basis and scope.
Title 42 - Public Health
(a) Basis. This subpart is based on sections 1935(a) through (d) of the Act as amended by section 103 of the MMA. (b) Scope. This subpart specifies State agency obligations for the Part D prescription drug benefit.
Title 42: Public Health
PART 423—VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT
Subpart S—Special Rules for States-Eligibility Determinations for Subsidies and General Payment Provisions
§ 423.900 Basis and scope.

