What Services Are Covered By Medicare? 
Original Medicare covers most health care services . The qualifying resolution is this . Is the service rendered considered `` medically necessary '' ? Medical services would include but are not limited to hospital inpatient services , emergency room , ambulance -LRB- medically necessary -RRB- , doctor visits , surgery -LRB- in or out of the hospital -RRB- , infusion therapy , imaging , lab and much more . 