Medicare is a form of health insurance developed by the government for older persons, in addition to those that have specific disabilities and diseases. If a person who has Medicare needs rehabilitation for instances of substance abuse, their treatment will be either covered in full by their Medicare insurance or to a significant degree. The only exception is, the individual will need to receive treatment from a drug rehab facility which accepts Medicare. Before the person will be permitted to start rehabilitation, they may also have to see their physician who must declare that rehab services are medically necessary, and the physician will usually approve what type of treatment the person will take part in. Medicare Part An and Part B cover various kinds of rehabilitation services. Part A covers an inpatient stay in a Medicare accepted program 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. Part B will partially cover outpatient rehab inside a Medicare accepted program, and the individual will have to cover whatever Medicare Part B doesn't cover with supplement insurance or they'll have to self pay.