Medicare program; changes to the inpatient hospital prospective payment system and fiscal year 1992 rates--HCFA. Final rule.

We are revising the Medicare inpatient hospital prospective payment system to implement necessary changes arising from legislation and our continuing experience with the system. In addition, in the addendum to this final rule, we are describing changes in the amounts and factors necessary to determine prospective payment rates for Medicare inpatient hospital services. We are also setting forth the new target rate percentages for determining rate-of-increase limits for hospitals and hospital units excluded from the prospective payment system. This final rule also responds to the comments we received concerning changes to hospital payments made in a January 7, 1991 final rule with comment. These changes include midyear changes to the inpatient hospital prospective payment system that implemented several provisions of section 4002 of the Omnibus Budget Reconciliation Act of 1990. In addition, this final rule responds to comments received concerning changes in the procedures and criteria of the Medicare Geographic Classification Review Board (MGCRB) that were set forth in a June 4, 1991 final rule with comment period.