Medicare Prescription Drug Plans

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Medicare Prescription Drug Plan (Part D). These plans (sometimes 

called "PDPs") add drug coverage to Original Medicare, some 

Medicare Cost Plans, some Medicare Private Fee-for-Service (PFFS) 

Plans, and Medicare Medical Savings Account (MSA) Plans. 

Each Medicare Prescription Drug Plan has its own list of covered 

drugs (called a formulary). Many Medicare drug plans place drugs into 

different "tiers" on their formularies. Drugs in each tier have a different 

cost. 

A drug in a lower tier will generally cost you less than a drug in a 

higher tier. In some cases, if your drug is on a higher tier and your 

prescriber thinks you need that drug instead of a similar drug on a 

lower tier, you or your prescriber can ask your plan for an exception to 

get a lower copayment. .