A, B, C and D
What each part actually covers.
Parts A and B make up Original Medicare and are provided by the federal government. Parts C and D are offered by private insurance companies.
- Part AHospital insurance
- Inpatient hospital stays, skilled nursing facility care after a qualifying stay, hospice, and some home health care. Most people don’t pay a monthly premium for Part A, because they or their spouse paid Medicare taxes while working. It has its own deductible when you’re admitted.
- Part BMedical insurance
- Doctor visits, outpatient care, lab work, medical equipment, and preventive services. Part B has a monthly premium, an annual deductible, and after that you generally pay a share of the cost of each service. There is no cap on that share under Original Medicare alone.
- Part CMedicare Advantage (MAPD) Plan
- An alternative way to get your Part A and Part B benefits, run by a private carrier instead of directly by Medicare. Plans must cover everything Original Medicare covers except hospice care, which Part A keeps paying for even while you’re in an Advantage plan. Most plans work through a network, though the rules vary by plan type. A PFFS plan may not have one. Many include prescription coverage and may add benefits Original Medicare doesn’t cover. Every plan has a yearly out-of-pocket maximum.
- Part DPrescription Drug (PDP) Plan
- Coverage for the medicines you pick up at a pharmacy. It comes either as a standalone plan alongside Original Medicare, or built into a Medicare Advantage plan. Going without it when you’re first eligible can cost you a permanent penalty later.