Medicare ICEP: Your First Medicare Advantage Enrollment Window

ICEP means Initial Coverage Election Period. The term concerns your first opportunity to choose Medicare Advantage. It is separate from applying for Medicare Part A and Part B, and it is not the six-month Medigap Open Enrollment Period.

Start with your A and B dates

You need both Part A and Part B to join Medicare Advantage, plus residence in the plan's service area and the applicable eligibility requirements. A plan selection cannot replace missing enrollment in A or B.

When does the plan start?

If the plan receives your request before the necessary Medicare coverage starts, plan coverage can begin with that coverage. A request after it starts generally takes effect the first day of the following month. Confirm the plan's written effective-date notice before using its card.

A checklist before choosing

• Read the separate Part A and Part B effective dates.
• Ask which election period applies to your situation.
• Verify doctors, hospitals, plan costs and authorization rules.
• Check the effect on employer or retiree benefits.
• Keep your enrollment receipt and start-date confirmation.

Avoid two common mix-ups

The January–March Medicare Advantage Open Enrollment Period generally serves people already in Medicare Advantage; it is not a universal first-time sign-up window. Medigap has different purchase protections and deadlines.

If dates are unclear, ask Medicare or the plan to verify them using your actual entitlement record. Do not copy a deadline from someone whose Part B began in a different month.

Related coverage questions

• How to Enroll in Medicare: Steps, Timing and Where to Get Help
• When Medicare Advantage Coverage Starts: Enrollment Timing Explained
• Medicare Advantage Open Enrollment: January–March Changes

Official sources

• Joining a plan
• Special Enrollment Periods
• When does Medicare coverage start?
• Open Enrollment