Medicare program, changes to the hospital outpatient prospective payment system and calendar year 2004 payment rates. Final rule with comment period.

This final rule with comment period revises the Medicare hospital outpatient prospective payment system to implement applicable statutory requirements and changes arising from our continuing experience with this system. In addition, it describes changes to the amounts and factors used to determine the payment rates for Medicare hospital outpatient services paid under the prospective payment system. These changes are applicable to services furnished on or after January 1, 2004. Finally, this rule responds to public comments received on the August 12, 2003 proposed rule for revisions to the hospital outpatient prospective payment system and payment rates (68 FR 47966).