CFR›Title 21›Chapter I›21 CFR Part 900 Citation21 CFR Part 900ContainsSubparts Subpart A–Subpart CCorpusDaily eCFRDisplayed edition2026-08-04Last updated2026-08-04 PART 900—MAMMOGRAPHY Subparts Subpart A Subpart A—Accreditation Subpart B Subpart B—Quality Standards and Certification Subpart C Subpart C—States as Certifiers Authority21 U.S.C. 360i, 360nn, 374(e); 42 U.S.C. 263b.Source62 FR 55976, Oct. 28, 1997, unless otherwise noted. Republished and corrected at 62 FR 60614, Nov. 10, 1997.