CFR›Title 21›Chapter I›Part 1000 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 1000—GENERAL Subparts A Subpart A—General Provisions Sections 1000.1–1000.3 B Subpart B—Statements of Policy and Interpretation Section 1000.15 Authority21 U.S.C. 360hh-360ss.Source38 FR 28624, Oct. 15, 1973, unless otherwise noted. Previous 900 Part 900—Mammography Next 1002 Part 1002—Records and Reports