20 CFR § 418.3620 - What is the effect of an initial determination?

---
identifier: "/us/cfr/t20/s418.3620"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 418.3620 - What is the effect of an initial determination?"
title_number: 20
title_name: "Employees' Benefits"
section_number: "418.3620"
section_name: "What is the effect of an initial determination?"
chapter_name: "SOCIAL SECURITY ADMINISTRATION"
part_number: "418"
part_name: "MEDICARE SUBSIDIES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
regulatory_source: "70 FR 77675, Dec. 30, 2005, unless otherwise noted."
cfr_part: "418"
---


# 418.3620 What is the effect of an initial determination?

An initial determination is binding unless you request an appeal within the time period stated in § 418.3630(a) or we revise it as provided in § 418.3678.