Initial Enrollment Period (IEP)
Medicare Glossary
The 7-month period when you first become eligible for Medicare. It starts 3 months before the month you turn 65, includes the month you turn 65, and ends 3 months after. If you miss this window, you may face late enrollment penalties and delayed coverage.
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This content is for educational purposes only and does not constitute a recommendation of any specific Medicare plan. Benefits, costs, and availability vary by plan and location. For complete information about your Medicare options, visit Medicare.gov or call 1-800-MEDICARE (1-800-633-4227), TTY: 1-877-486-2048, available 24 hours a day, 7 days a week.
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