Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 2/5
Under Medicare Part D rules, a plan's formulary must include:
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Answer & full 3-part explanation (select an option above, or peek)
Why A is correct
A Part D plan's formulary must include at least two drugs in each treatment category, but it is not required to include all drugs on the market. This minimum protects enrollees by ensuring that each therapeutic class offers a meaningful choice, while still allowing plans to manage costs through restricted lists and tier placement. The examination objectives state this two-drug minimum explicitly under AH-III.D.1g. The requirement balances access with the plan's ability to negotiate prices and steer utilization toward cost-effective options.
Why the other options are wrong
- B) Formularies are expressly not required to include all FDA-approved drugs.
- C) Formularies routinely include both brand-name and generic drugs across the tiers.
- D) There is no 100-drug selection rule; the requirement is a minimum of two drugs per treatment category.
Memory hook
Two drugs per category is the Part D formulary floor.