CFR›Title 42›Chapter I›Part 2›Subpart A ContainsSections 2.1–2.4CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Introduction Sections 2.1 § 2.1 Statutory authority for confidentiality of substance use disorder patient records. 2.2 § 2.2 Purpose and effect. 2.3 § 2.3 Civil and criminal penalties for violations. 2.4 § 2.4 Complaints of noncompliance. Next B Subpart B—General Provisions