Compliance Guide

42 CFR Part 2, explained

The federal rule that protects addiction treatment records — stricter than HIPAA in key ways. Here's what programs need to know.

By Level Up Compliance · Updated May 2026 · ~6 min read

42 CFR Part 2 is a federal regulation that protects the confidentiality of substance use disorder (SUD) treatment records held by federally assisted programs. It restricts when and how a program may disclose that a person has sought or received SUD treatment, generally requiring patient consent for disclosures — historically making it stricter than HIPAA in several respects.

What Part 2 protects

Part 2 applies to "Part 2 programs" — federally assisted programs that provide SUD diagnosis, treatment, or referral. Its core purpose is to encourage people to seek treatment without fear that the fact of their treatment will be disclosed, for example to employers or law enforcement. In practice, records identifying someone as a SUD patient generally cannot be released without the patient's written consent, with limited exceptions such as medical emergencies.

Part 2 vs. HIPAA

Both protect health information, but Part 2 has historically been more restrictive for SUD records — particularly around consent and re-disclosure. A 2024 federal final rule aligned Part 2 more closely with HIPAA, including allowing a single patient consent to cover future uses and disclosures for treatment, payment, and health care operations. Programs should confirm their current consent forms, notices, and policies reflect the latest requirements.

What it isA federal confidentiality rule for SUD treatment records
Who it applies toFederally assisted SUD programs ("Part 2 programs")
Core requirementPatient consent generally required to disclose SUD treatment records
vs. HIPAAHistorically stricter; a 2024 rule aligned it more closely with HIPAA
This is general information, not legal advice. Part 2 compliance touches your consent forms, notices, and disclosure procedures. We help behavioral health programs build compliant policies as part of licensing and operations — and recommend confirming specifics with qualified counsel.

Frequently asked questions

What is 42 CFR Part 2?

42 CFR Part 2 is a federal regulation that protects the confidentiality of substance use disorder treatment records held by federally assisted programs. It restricts disclosure of the fact that a person has sought or received SUD treatment, generally requiring patient consent.

What is the difference between 42 CFR Part 2 and HIPAA?

Both protect health information, but Part 2 has historically been more restrictive for SUD records, especially around consent and re-disclosure. A 2024 federal final rule aligned Part 2 more closely with HIPAA, including allowing a single consent for future treatment, payment, and operations disclosures.

Who must comply with 42 CFR Part 2?

Part 2 applies to federally assisted programs that provide substance use disorder diagnosis, treatment, or referral for treatment — often called Part 2 programs.

Does 42 CFR Part 2 require patient consent to share records?

Generally yes. Records identifying someone as an SUD patient typically cannot be disclosed without the patient's written consent, with limited exceptions such as medical emergencies. Recent rule changes have updated how consent can be structured.

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