---
kind: "unit"
title: "42"
title_heading: "The Public Health and Welfare"
key: "ch6A/schIII–A"
level: "subchapter"
label: "Subchapter III–A"
heading: "Substance Abuse and Mental Health Services Administration"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/ch6A-schIII-A"
sections_count: 121
---

# Subchapter III–A — Substance Abuse and Mental Health Services Administration

Title 42 — The Public Health and Welfare › Chapter 6A — Public Health Service

## Contents

- [Part A — Organization and General Authorities](/usc/42/ch6A-schIII-A-ptA.md)
- [Part B — Centers and Programs](/usc/42/ch6A-schIII-A-ptB.md)
- [Part C — Projects for Assistance in Transition From Homelessness](/usc/42/ch6A-schIII-A-ptC.md)
- [Part D — Miscellaneous Provisions Relating to Substance Abuse and Mental Health](/usc/42/ch6A-schIII-A-ptD.md)
- [Part E — Children With Serious Emotional Disturbances](/usc/42/ch6A-schIII-A-ptE.md)
- [Part F — Model Comprehensive Program for Treatment of Substance Abuse](/usc/42/ch6A-schIII-A-ptF.md)
- [Part G — Projects for Children and Violence](/usc/42/ch6A-schIII-A-ptG.md)
- [Part H — Requirement Relating to the Rights of Residents of Certain Facilities](/usc/42/ch6A-schIII-A-ptH.md)
- [Part I — Requirement Relating to the Rights of Residents of Certain Non-Medical, Community-Based Facilities for Children and Youth](/usc/42/ch6A-schIII-A-ptI.md)
- [Part J — Services Provided Through Religious Organizations](/usc/42/ch6A-schIII-A-ptJ.md)
- [Part K — Minority Fellowship Program](/usc/42/ch6A-schIII-A-ptK.md)