title: The evolution of case-mix measurement using DRGs: past, present and future.
abstract: The Diagnosis Related Groups patient classification scheme has been evolving for over twenty years. The wide variety of DRG applications in the U.S. has resulted in the development of three major versions of DRGs. The alternative DRG systems are described and compared. Comparative statistical data for each DRG system are presented.
authors.affiliation: 3M Health Information Systems, Wallingford, CT 06492, USA.
authors.forename: R F
authors.initials: RF
authors.lastname: Averill
mesh_terms: D003363:Cost Control / Q000639:trends; D003625:Data Collection; D003953:Diagnosis-Related Groups / Q000639:trends*; D017721:Hospital Costs / Q000639:trends; D006801:Humans; D008491:Medical Informatics Applications; D006278:Medicare / Q000639:trends; D014481:United States