---
kind: "unit"
title: "45"
title_heading: "Public Welfare"
key: "subtA/subchD"
level: "subchap"
label: "Subchapter D"
heading: "Health Information Technology"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/45/subtA-subchD"
sections_count: 108
---

# Subchapter D — Health Information Technology

Title 45 C.F.R. — Public Welfare › Subtitle A — Department of Health and Human Services

## Contents

- [Part 170 — Health Information Technology Standards, Implementation Specifications, and Certification Criteria and Certification Programs for Health Information Technology](/cfr/45/subtA-subchD-part170.md)
- [Part 171 — Information Blocking](/cfr/45/subtA-subchD-part171.md)
- [Part 172 — Trusted Exchange Framework and Common Agreement](/cfr/45/subtA-subchD-part172.md)
- [Part 173-179 — Parts 173-179 [reserved]](/cfr/45/subtA-subchD-part173-179.md)