Article / Updated 11-03-2020
Part D, Medicare's program for covering prescription drugs, is a complicated benefit that resembles no other type of drug coverage ever devised. That's why understanding how it works before plunging in is really important. Following is information on the peculiarities of Part D coverage — how it can fluctuate during the year, how different plans have their own lists of drugs they cover, and which drugs are excluded from Part D and which must be covered.