Medicare paid hospitals a higher amount per admission in 1984 than had been planned because the case-mix index (CMI), which
reflects the proportion of patients in high-weighted DRG's versus low-weighted ones, increased more than had been projected.
This study estimated the degree to which the increase in the CMI from 1981 reflected medical practice changes, the aging of
the Medicare inpatient population, changes in coding practices of physicians and hospitals, and changes in the way that the
Health Care Financing Administration collects the data on case-mix. All of the above, except for aging, contributed to the
increase in the CMI.
Abstracting and Indexing : Commission on Professional and Hospital Activities : Diagnosis-Related Groups/economics : Hospitals,
Community/economics : Medicare/economics : Regression Analysis : Support, U.S. Gov't, Non-P.H.S. : United States : United
States Health Care Financing Administration