CFR›Title 42›Chapter IV›Part 427›Subpart B ContainsSections 427.100–427.101CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart B—Determination of Part B Rebatable Drugs Sections 427.100 § 427.100 Definitions. 427.101 § 427.101 Identification of Part B rebatable drugs. Previous A Subpart A—General Provisions Next C Subpart C—Coinsurance Adjustment and Adjusted Medicare Payment for Part B Rebatable Drugs With Price Increases Faster Than Inflation