---
kind: "unit"
title: "45"
title_heading: "Public Welfare"
key: "subtA/subchD/part171"
level: "part"
label: "Part 171"
heading: "Information Blocking"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/45/subtA-subchD-part171"
sections_count: 24
---

# Part 171 — Information Blocking

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

## Contents

- [Subpart A — General Provisions](/cfr/45/subtA-subchD-part171-subpartA.md)
- [Subpart B — Exceptions That Involve Not Fulfilling Requests to Access, Exchange, or Use Electronic Health Information](/cfr/45/subtA-subchD-part171-subpartB.md)
- [Subpart C — Exceptions That Involve Procedures for Fulfilling Requests to Access, Exchange, or Use Electronic Health Information](/cfr/45/subtA-subchD-part171-subpartC.md)
- [Subpart D — Exceptions That Involve Practices Related to Actors' Participation in The Trusted Exchange Framework and Common Agreement (TEFCA SM )](/cfr/45/subtA-subchD-part171-subpartD.md)
- [Subpart E-I — Subparts E-I [RESERVED]](/cfr/45/subtA-subchD-part171-subpartE-I.md)
- [Subpart J — Disincentives for Information Blocking by Health Care Providers](/cfr/45/subtA-subchD-part171-subpartJ.md)
- [Subpart K — Transparency for Information Blocking Determinations, Disincentives, and Penalties](/cfr/45/subtA-subchD-part171-subpartK.md)