Health Systems Consultants, Inc. asked RAND to assess the comparative ability of two severity-adjusted patient classification systems to explain variation in Medicare costs per discharge. The two systems evaluated in the study are the Medicare-severity adjusted DRG (MS-DRG) system that Medicare adopted effective October 1, 2007 and Health System Consultants, Inc.'s Refined-DRGs (RDRGs), version 21.0/24.0. The results should be of interest to parties who use a classification system to assign hospital inpatients to groupings based on expected resource needs.
Wynn, Barbara O., Comparative Performance of the MS-DRGS and RDRGS in Explaining Variation in Cost for Medicare Hospital Discharges. Santa Monica, CA: RAND Corporation, 2008. https://www.rand.org/pubs/working_papers/WR606.html.
Wynn, Barbara O., Comparative Performance of the MS-DRGS and RDRGS in Explaining Variation in Cost for Medicare Hospital Discharges, Santa Monica, Calif.: RAND Corporation, WR-606, 2008. As of September 08, 2021: https://www.rand.org/pubs/working_papers/WR606.html