In a Notice of Proposed Rulemaking published December 2, 2022 (the Proposed Rule), the United States Department of Health and Human Services (HHS) proposed long-awaited changes to the regulations protecting the confidentiality of substance use disorder patient records under Part 2 of Title 42 of the Code of Federal Regulations (42 CFR Part 2, or Part 2). Specifically, the Proposed Rule would implement provisions of Section 3221 of the Coronavirus Aid, Relief, and Economic Security Act (CARES Act), which required HHS to align Part 2 with certain provisions of the Health Insurance Portability and Accountability Act of 1996 (HIPAA) and to make certain changes to the HIPAA Notice of Privacy Practices, the form given to patients and plan members that describes patient privacy rights, covered entity duties, and the covered entity’s uses and disclosures of protected health information (PHI).