---
kind: "unit"
title: "42"
title_heading: "Public Health"
key: "chI/subchB"
level: "subchap"
label: "Subchapter B"
heading: "Personnel"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/42/chI-subchB"
sections_count: 60
---

# Subchapter B — Personnel

Title 42 C.F.R. — Public Health › Chapter I — Public Health Service, Department of Health and Human Services

## Contents

- [Part 21 — Commissioned Officers](/cfr/42/chI-subchB-part21.md)
- [Part 22 — Personnel Other Than Commissioned Officers](/cfr/42/chI-subchB-part22.md)
- [Part 23 — National Health Service Corps](/cfr/42/chI-subchB-part23.md)
- [Part 24 — Senior Biomedical Research and Biomedical Product Assessment Service](/cfr/42/chI-subchB-part24.md)