---
kind: "unit"
title: "42"
title_heading: "The Public Health and Welfare"
key: "ch6A/schXVII/ptC"
level: "part"
label: "Part C"
heading: "Certain Programs Regarding Mental Health and Substance Use"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/ch6A-schXVII-ptC"
sections_count: 2
---

# Part C — Certain Programs Regarding Mental Health and Substance Use

Title 42 — The Public Health and Welfare › Chapter 6A — Public Health Service › Subchapter XVII — Block Grants

## Contents

- [Subpart i — data infrastructure development](/usc/42/ch6A-schXVII-ptC-spti.md)
- [Subpart ii — interim maintenance treatment of narcotics dependence](/usc/42/ch6A-schXVII-ptC-sptii.md)