Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 2/5
A person who delays Part B enrollment while covered by employer group health insurance may enroll during the Special Enrollment Period, which lasts:
Select an option to reveal the answer and the full 3-part explanation — free, no signup.
Answer & full 3-part explanation (select an option above, or peek)
Why A is correct
The Part B Special Enrollment Period (SEP) allows individuals who delayed enrollment while covered by employer group health insurance to enroll without penalty during an 8-month window that begins when the employer coverage or employment ends. Enrolling within that window avoids the late enrollment penalty. The 8-month SEP is a specific figure in the Part B enrollment material.
Why the other options are wrong
- B) The SEP is 8 months, not 6, and it runs from the end of employer coverage, not from retirement alone.
- C) Twelve months from the 65th birthday is not the SEP structure; the SEP is an 8-month window after group coverage ends.
- D) Two years is not the SEP period; the window is 8 months.
Memory hook
Group coverage ends, an 8-month penalty-free window opens. Enroll inside, dodge the surcharge.