Medicare Introduction Practice Test

The key idea is understanding how Part D plans organize medicines and what you pay. A formulary is the plan’s official list of prescription drugs that it covers. Each drug on that list is assigned to a tier, and those tiers determine your cost-sharing. Lower tiers, which often include generic or preferred options, usually come with lower copays or coinsurance. Higher tiers cover more expensive options like brand-name drugs or specialty medications and carry higher out-of-pocket costs. The exact amounts depend on your plan, and some drugs on the formulary may still require additional rules like prior authorization or step therapy. The other choices describe things like pharmacy hours, prescription limits, or requiring a specialist, which aren’t what a formulary or drug tiers are about.