---
kind: "unit"
title: "45"
title_heading: "Public Welfare"
key: "subtA/subchA/part4"
level: "part"
label: "Part 4"
heading: "Service of Process"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/45/subtA-subchA-part4"
sections_count: 7
---

# Part 4 — Service of Process

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

## Sections

- [§4.1. Suits against the Department and its employees in their official capacities.](/cfr/45/4.1.md)
- [§4.2. Other process directed to the Department or Secretary.](/cfr/45/4.2.md)
- [§4.3. Process against Department officials in their individual capacities.](/cfr/45/4.3.md)
- [§4.4. Acknowledgement of mailed process.](/cfr/45/4.4.md)
- [§4.5. Effect of regulations.](/cfr/45/4.5.md)
- [§4.6. Materials related to petitions under the National Vaccine Injury Compensation Program.](/cfr/45/4.6.md)
- [§4.7. Congressional subpoenas directed to the Department or Secretary.](/cfr/45/4.7.md)