Medical Expense✓ Verified · outline & fact-checked · Sep 2026Difficulty 2/5
Under Medicare Part D, a plan's formulary must include at least:
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Answer & full 3-part explanation (select an option above, or peek)
Why A is correct
Part D plans must cover at least two drugs in each therapeutic category and class on their formularies. This protects beneficiaries by ensuring meaningful choice within each drug category while still allowing plans to manage costs through tiering and utilization controls. The two-drug-per-class minimum is a specific Part D rule tested on the A&H exam.
Why the other options are wrong
- B) A single drug per category is insufficient; the standard is at least two drugs in each category and class.
- C) Five drugs is not the statutory minimum; the requirement is two.
- D) Plans are not required to cover every FDA-approved drug; formularies are selective but must meet the two-drug minimum per class.
Memory hook
Two drugs per class = Part D's floor. Plans pick the list, but choice within a class is guaranteed.