
Proposed changes by CMS relating to payment rates for inpatientstays would base the weights assigned to diagnosis-related groups(DRGs) on hospital costs rather than on charges and adjust the DRGsfor patient severity. CMS issued a notice of proposed rulemakingthat would begin the transition to the first significant revisionof the Inpatient Prospective Payment System (IPPS) since itsimplementation in 1983.