---
kind: "unit"
title: "20"
title_heading: "Employees' Benefits"
key: "chII/subchB/part221"
level: "part"
label: "Part 221"
heading: "Jurisdiction Determinations"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/20/chII-subchB-part221"
sections_count: 4
---

# Part 221 — Jurisdiction Determinations

Title 20 C.F.R. — Employees' Benefits › Chapter II — Railroad Retirement Board › Subchapter B — Regulations under the Railroad Retirement Act

## Sections

- [§221.1. Introduction.](/cfr/20/221.1.md)
- [§221.2. Railroad Retirement Board jurisdiction.](/cfr/20/221.2.md)
- [§221.3. Social Security Administration jurisdiction.](/cfr/20/221.3.md)
- [§221.4. When a jurisdiction decision may be reversed.](/cfr/20/221.4.md)