HCFA clarifies reimbursement for air medical services.
D000401:Aircraft / Q000191:economics*; D000552:Ambulances / Q000191:economics*; D014487:Centers for Medicare and Medicaid Services, U.S.; D007349:Insurance, Health, Reimbursement / Q000331:legislation & jurisprudence; D006278:Medicare / Q000331:legislation & jurisprudence*; D014481:United States