CFR›Title 10›Chapter II›Part 221›Subpart C ContainsSection 221.21CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart C—Definitions Sections 221.21 § 221.21 Definitions. Previous B Subpart B—Exclusions Next D Subpart D—Administrative Procedures and Sanctions