Medicare is a type of health insurance designed by the U.S. government for senior citizens, along with people who have specific disabilities and diseases. If a person who has Medicare needs rehab for cases of substance abuse, their rehab will be either covered in full by their Medicare insurance or to a significant extent. The only catch is, the individual will need to acquire treatment from the drugs and alcohol detox facility which accepts Medicare. Before the individual will be allowed to begin treatment, they may also have to see their primary care physician who must state that treatment services are medically essential, and the physician will generally approve what sort of treatment the person will do. Medicare Part An and Part B cover several types of rehabilitation services. Medicare Part A covers an inpatient stay in a Medicare accepted facility in the event that the individual should be in a hospital because of their issue, and the costs that they will have to cover personally are the same as any other stay in a hospital. Medicare Part B will partially cover outpatient rehabilitation within a Medicare accepted program, and the individual will have to cover whatever Medicare Part B doesn't cover with supplemental insurance or they'll have to self pay.