After your Initial Enrollment Period is over, you may have a chance to sign up for Medicare during a Special Enrollment Period. If you didn’t sign up for Part B (or Part A if you have to buy it) when you were first eligible because you’re covered under a group health plan based on current employment (your own, a spouse’s, or a family member’s (if you have a disability)), you can sign up for Part A and/or Part B:
- Anytime you’re still covered by the group health plan
- During the 8-month period that begins the month after the employment ends or the coverage ends, whichever happens first
Usually, you don’t pay a late enrollment penalty if you sign up during a Special Enrollment Period. This Special Enrollment Period doesn’t apply to people who are eligible for Medicare based on End-Stage Renal Disease (ESRD). It also doesn’t apply if you’re still in your Initial Enrollment Period. Note: If you have a disability, and the group health plan coverage is based on the current employment of a family member (other than a spouse), the employer offering the group health plan must have 100 or more employees for you to get a Special Enrollment Period.