Part 421. PART 421—MEDICARE CONTRACTING

• SUBPART A [§ 421.1 - § 421.5] - Subpart A—Scope, Definitions, and General Provisions
• SUBPART B [§ 421.100 - § 421.128] - Subpart B—Intermediaries
• SUBPART C [§ 421.200 - § 421.214] - Subpart C—Carriers
• SUBPART D [§ 421.300 - § 421.316] - Subpart D—Medicare Integrity Program Contractors
• SUBPART E [§ 421.400 - § 421.404] - Subpart E—Medicare Administrative Contractors (MACs)
• SUBPART F - Subpart F [Reserved]