In the United States of America, certain medical equipment requires a prescription from a doctor. Medicare Part B (Medical Insurance) covers power-operated vehicles (scooters) and manual wheelchairs as durable medical equipment (DME), provided that the doctor treating your condition submits a written order stating that you have a medical need for a wheelchair or scooter for use in your home. Medicare will only provide DME coverage if your doctors and DME suppliers are enrolled in Medicare.
Source: Medicare Government