Medicare is a sort of medical health insurance developed by the U.S. government for seniors, along with individuals with specific disabilities and illnesses. When someone who has Medicare needs rehabilitation for instances of substance abuse, their rehabilitation will either be covered fully by their Medicare health insurance or to a great extent. The only exception is, the individual will have to obtain treatment from the drug rehab facility which accepts Medicare. Before the person will be permitted to start treatment, they may also have to see their primary care physician who must declare that rehabilitation services are medically necessary, and the physician will usually approve what type of treatment the individual will do. Medicare Part An and Part B cover a variety of rehab services. Medicare Part A pays for an inpatient stay in a Medicare accepted program if the individual must be in a hospital for their issue, along with the costs that they will have to cover personally are the same as every other hospital stay. Part B will partially cover outpatient rehabilitation inside a Medicare accepted facility, and the individual will need to cover whatever Medicare Part B doesn't pay for with supplemental insurance coverage or they will have to self pay.