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Title 42

Displaying title 42, up to date as of 7/13/2026. 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 427Medicare Part B Drug Inflation Rebate Program427.10 – 427.600
Subpart AGeneral Provisions427.10 – 427.20
§ 427.10Basis and scope.
§ 427.20Definitions.
Subpart BDetermination of Part B Rebatable Drugs427.100 – 427.101
§ 427.100Definitions.
§ 427.101Identification of Part B rebatable drugs.
Subpart CCoinsurance Adjustment and Adjusted Medicare Payment for Part B Rebatable Drugs With Price Increases Faster Than Inflation427.200 – 427.201
§ 427.200Definitions.
§ 427.201Computation of beneficiary coinsurance and adjusted Medicare payment for Part B rebatable drugs with price increases faster than inflation.
Subpart DDetermination of the Rebate Amount for Part B Rebatable Drugs427.300 – 427.304
§ 427.300Definitions.
§ 427.301Calculation of the total Part B rebate amount to be paid by manufacturers.
§ 427.302Calculation of the per unit Part B rebate.
§ 427.303Determination of total number of billing units.
§ 427.304Adjustments for changes to billing and payment codes.
Subpart EReducing the Rebate Amount for Part B Rebatable Drugs in Shortage and When There Is a Severe Supply Chain Disruption427.400 – 427.402
§ 427.400Definitions.
§ 427.401Reducing the rebate amount for Part B rebatable drugs currently in shortage.
§ 427.402Reducing the rebate amount for certain Part B rebatable drugs when there is a severe supply chain disruption.
Subpart FReports of Rebate Amounts, Reconciliation, Suggestion of Error, and Payments427.500 – 427.505
Subpart GEnforcement of Manufacturer Payment of Rebate Amounts427.600
§ 427.600Civil money penalty notice and appeals procedures.