CFR›Title 21›Chapter I›Part 19›21 CFR Part 19 Subpart B Citation21 CFR Part 19 Subpart BContainsSection § 19.21CorpusDaily eCFRDisplayed edition2026-09-03Last updated2026-09-03 Subpart B—Reporting of Violations Sections § 19.21 § 19.21 Duty to report violations. Authority21 U.S.C. 371.Source42 FR 15615, Mar. 22, 1977, unless otherwise noted.