CFR›Title 21›Chapter I›Part 821›Subpart A ContainsSections 821.1–821.4CorpusDaily eCFRDisplayed edition2026-04-23Last updated2026-04-23 Subpart A—General Provisions Sections 821.1 § 821.1 Scope. 821.2 § 821.2 Exemptions and variances. 821.3 § 821.3 Definitions. 821.4 § 821.4 Imported devices. Next B Subpart B—Tracking Requirements