Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 1/5
Which Medicare enrollment requirement must a beneficiary satisfy before enrolling in a stand-alone Part D prescription drug plan?
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
To enroll in a stand-alone Medicare Part D prescription drug plan, the beneficiary must be enrolled in Medicare Part A and/or Part B, because Part D is available only to Medicare beneficiaries who have one of the two basic coverages. A person enrolled in both Parts A and B, or in either one alone, may choose a Part D plan. There is no requirement to own a Medigap policy, and older adults over 65 are the program's primary population. The Part D enrollment is voluntary, but eligibility is tied to enrollment in the underlying Medicare program.
Why the other options are wrong
- B) The 60 lifetime reserve days are a Part A hospital benefit, not a condition for Part D enrollment.
- C) Medigap is optional supplement coverage and is unrelated to Part D eligibility; in fact, Part D is the drug benefit Medigap no longer provides.
- D) Medicare beneficiaries age 65 and over are the core Part D population; being under 65 is not a requirement.
Memory hook
Part D's ticket in: show your Part A or Part B card first.