42 CFR § 407.15 - General enrollment period.

---
identifier: "/us/cfr/t42/s407.15"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 407.15 - General enrollment period."
title_number: 42
title_name: "Public Health"
section_number: "407.15"
section_name: "General enrollment period."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "407"
part_name: "SUPPLEMENTARY MEDICAL INSURANCE (SMI) ENROLLMENT AND ENTITLEMENT"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 1302, 1395p, 1395q, and 1395hh."
regulatory_source: "53 FR 47204, Nov. 22, 1988, unless otherwise noted."
cfr_part: "407"
---


# 407.15 General enrollment period.

(a) Except as specified in paragraph (b) of this section, the general enrollment period is January through March of each calendar year.

(b) An unlimited general enrollment period existed between April 1 and September 30, 1981. Any eligible individual whose initial enrollment period had ended, or whose previous period of entitlement had terminated, could have enrolled or reenrolled during any month of that 6-month period.