What Is a Medicare Special Enrollment Period (SEP)?

A Special Enrollment Period (SEP) lets you sign up for Medicare Part B without a penalty after you lose employer group health coverage or stop working, whichever comes first.

Frequently Asked Questions

How long does the SEP last?
The SEP lasts 8 months, starting the month after your employment ends or your employer coverage ends, whichever happens first.
Does COBRA extend my SEP?
No. COBRA does not count as employer coverage for SEP purposes. Your SEP clock starts when your active employment or employer group coverage ends, not when COBRA ends.
Can I get a SEP for Part D too?
Yes. When you lose creditable drug coverage, you typically get a 63-day window to enroll in a Part D plan.