When can I enroll in a Medicare Prescription Drug Plan?

  • Medicare Enrollment Periods

  • Enrollment Period
  • Medicare Part D Enrollment Time Frame
    • Initial Enrollment Period (IEP)
    • If you are newly eligible for Medicare because you are turning 65
      You may enroll during the 7-month period that starts 3 months before the month you turn 65, includes the month you turn 65, and ends 3 months after the month you turn 651.

      If you are newly eligible for Medicare due to a qualifying disability
      If you are under 65 you are eligible to enroll in Medicare if you have a qualifying disability. You will have a 7-month enrollment window that opens 3 months before your 25th month of receiving Social Security or Railroad Retirement Board benefits and ends 3 months afterwards.
    • Annual Enrollment Period (AEP)
    • Medicare's AEP begins October 15, and ends December 7 of each year. The choices you make generally take effect January 1 of the following year. During AEP you may:
      • Switch from a Medicare Advantage Plan that does offer drug coverage to a Medicare Advantage Plan that does not offer drug coverage.
      • Join a Medicare Prescription Drug Plan.
      • Switch from one Medicare Prescription Drug Plan to another Medicare Prescription Drug Plan.
      • Drop your Medicare prescription drug coverage completely.
    • Special Enrollment Period (SEP)
    • The Special Enrollment Period allows you to join, switch or drop a Medicare prescription drug plan if any of these circumstances apply to you:
      • You recently returned to the United States after living permanently outside of the U.S.
      • You have both Medicare and Medicaid or your state helps pay for your Medicare premiums.
      • You no longer qualify for Extra Help paying for your Medicare prescription drug coverage.
      • You recently involuntarily lost your creditable prescription drug coverage (creditable means prescription drug coverage as good as Medicare basic Part D coverage).
      • You get Extra Help to pay for Medicare prescription drug coverage but do not have Medicaid.
      • In the last 12 months, you left a Medigap policy to enroll in a Medicare Advantage Plan with prescription drug coverage for the first time.
      • In the last 12 months, you turned 65 and enrolled in a Medicare Advantage Plan with prescription drug coverage.
      • You are leaving/losing/joining an employer or union.
      • You belong to a Pharmacy Assistance Program provided by your state.
      • You are losing or lost your participation in a Pharmacy Assistance Program provided by your state.
      • You recently moved outside the service area for your current plan, or have recently moved and this plan is a new option for you.
      • You are disenrolling from a Medicare cost plan that provided your prescription drug coverage.
      • You are being disenrolled from a Medicare Special Needs Plan (SNP) because you no longer have special needs status.
      • Your plan is ending its contract with Medicare, or Medicare is ending its contract with your plan.
      • You recently left a PACE program (Program of all inclusive care for the elderly.)
      • You live in, are moving into, or recently moved out of a nursing home or Long-Term Care Facility.
      • You are disenrolling from your Medicare Advantage Plan between January 1 and February 14 to enroll in original Medicare.

      The Special Enrollment Period (SEP) reasons listed above are examples, and do not include every situation that may qualify for an SEP enrollment. Your eligibility for an SEP does not convey eligibility to enroll in the plan; in addition to having a valid enrollment period you must also meet all applicable Part D eligibility criteria. For more information about Special Election Periods, call Medicare at 1-800-MEDICARE (1-800-633-4227). TTY users call 1-877-486-2048, 24 hours a day, 7 days a week.

Return to the Medicare FAQ section to view more answers to other commonly asked questions about Medicare prescription drug coverage. Contact us if you'd like more information about when to enroll in a Medicare prescription drug plan.

1If your birthday falls on the first of any month, your 7-month IEP begins and ends one month sooner. For example, if your birthday is July 1st, your 7-month IEP is the same as if you were born in June - beginning in March and ending in September.