Changing rules for ambulatory care reimbursement fuel shifts in industry.
D000553:Ambulatory Care / Q000145:classification*; D014487:Centers for Medicare and Medicaid Services, U.S.; D006278:Medicare; D010044:Outpatient Clinics, Hospital / Q000191:economics*; D011445:Prospective Payment System / Q000639:trends*; D014481:United States