Medicare is a type of medical health insurance developed by the federal government for seniors, in addition to those that have specific disabilities and diseases. When someone who has Medicare needs rehabilitation for instances of drug or alcohol abuse, their rehabilitation will be either covered completely by their Medicare health insurance or to a significant degree. The only real exception is, the individual will need to obtain treatment from the drugs and alcohol detox facility which accepts Medicare. Before the person will be allowed to start rehabilitation, they may also have to visit their primary care physician who must state that rehabilitation services are medically needed, and the physician will generally approve what sort of treatment the individual will do. Medicare Part An and Part B cover various kinds of rehab services. Medicare Part A pays for an inpatient stay in a Medicare accepted center when the individual must be in a hospital for his or her problem, along with the costs that they will have to cover personally are the same as any other stay in a hospital. Medicare Part B will partly cover outpatient rehab in a Medicare accepted center, and the individual will have to cover whatever Medicare Part B doesn't cover with supplemental insurance coverage or they'll have to self pay.