Evolving medical practice in the hospital.
D003953:Diagnosis-Related Groups; D006739:Hospital Administration / Q000639:trends*; D006801:Humans; D006278:Medicare; D011445:Prospective Payment System / Q000639:trends*; D011785:Quality Assurance, Health Care / Q000639:trends; D012051:Reimbursement Mechanisms / Q000639:trends*; D014481:United States