1 Palliative and Advanced Illness Research (PAIR) Center, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia.
2 Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia.
3 Cardiovascular Division, John T. Milliken Department of Internal Medicine, and Center for Advancing Health Services, Policy & Economics Research (CAHSPER), Institute for Public Health, Washington University in St Louis, St Louis, Missouri.
This Viewpoint reviews the history of administrative risk adjustment models used in health care and provides recommendations for modernizing these models to promote their safe, transparent, equitable, and efficient use.