Medicare is a type of medical health insurance developed by the U.S. government for senior citizens, as well as people who have certain disabilities and illnesses. If a person who has Medicare needs rehab for cases of substance abuse, their rehabilitation will either be covered completely by their Medicare insurance or to a significant degree. The one exception is, the person must receive treatment from an alcohol and drugs rehab facility which accepts Medicare. Before the person will be permitted to start rehab, they will also have to visit their doctor who must declare that treatment services are medically needed, and the doctor will generally approve what sort of rehabilitation the individual will do. Medicare Part An and Part B cover several types of rehab services. Part A pays for an inpatient stay in a Medicare accepted program if the individual should be in a hospital for their problem, and the costs which they willwill have to pay for personally are the same as any other stay in a hospital. Medicare Part B will partially cover outpatient treatment in the Medicare accepted facility, and the individual will have to cover whatever Part B doesn't cover with supplemental insurance or they'll have to self pay.