Economic prelude to prospective reimbursement by DRGs.
D003363:Cost Control / Q000379:methods; D003953:Diagnosis-Related Groups / Q000191:economics*; D004469:Economics, Hospital / Q000639:trends*; D006278:Medicare; D011445:Prospective Payment System / Q000639:trends*; D011907:Rate Setting and Review / Q000639:trends; D012051:Reimbursement Mechanisms / Q000639:trends*; D014481:United States