Medicare is a federal health insurance plan that's generally accessible to US residents when they reach age 65. Medicare is also broken into four parts: A, B, C, and D. Here's a quick breakdown of what's covered for each of the parts of Medicare. Medicare Part A Medicare Part A is one of the Original Medicare options. It's designed to cover inpatient hospital care, as well as medically necessary home health services, skilled nursing, and hospice care. This option is for those US residents who paid Medicare taxes while working. Medicare Part B Part B is another of the Original Medicare plan options... but this one is optional. It also costs money. US residents who enroll in Part B pay a monthly premium, but it covers outpatient care, as well as doctor's appointments and another medical cost. Deductibles and co-pays may apply, but Plan B does cover medically necessary services. Medicare Part C Part C is just one of the Medicare Advantage Plans in