title: AHA voices concerns about HCFA's severity index.
mesh_terms: D000573:American Hospital Association; D014487:Centers for Medicare and Medicaid Services, U.S.; D003953:Diagnosis-Related Groups; D006278:Medicare; D008962:Models, Theoretical; D009026:Mortality; D012720:Severity of Illness Index; D012984:Software; D014481:United States