Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 1/5
Medicare Part D plan formularies are required to include:
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Answer & full 3-part explanation (select an option above, or peek)
Why A is correct
Medicare Part D plans must include in their formularies at least two drugs in each therapeutic category and class of covered outpatient drugs. This two-drug rule ensures that beneficiaries have a meaningful choice of treatment within each drug category. The formulary requirement does not obligate a plan to cover every FDA-approved drug, nor is it limited to generics or brand-name drugs; plans design tiered formularies with both, but they must satisfy the two-drug-per-category minimum and maintain it throughout the plan year.
Why the other options are wrong
- B) Plans are not required to cover every FDA-approved drug; they maintain tiered formularies subject to the two-drug minimum per category.
- C) Formularies include both generic and brand-name drugs; the two-drug rule applies to therapeutic categories, not to a brand-only requirement.
- D) Formularies are not generic-only; they include brand-name drugs as well, provided each category has at least two drugs.
Memory hook
Part D formularies: at least 2 drugs per category. A little choice, guaranteed by CMS.