Reasonableness of the Ambulance Trip

10.2.2 - Reasonableness of the Ambulance Trip (Rev. 103; Issued: 02-20-09; Effective Date: 01-05-09; Implementation Date: 03- 20-09) Under the FS payment is made according to the level of medically necessary services actually furnished. That is, payment is based on the level of service furnished (provided they were medically necessary), not simply on the vehicle used. Even if a local government requires an ALS response for all calls, payment under the FS is made only for the level of service furnished, and then only when the service is medically necessary.