Outpatient Definitions and Methodology

Service Statistics

All information in this report is taken from the Medicare Outpatient Prospective Payment System (OPPS) Limited Data Set which is updated annually by CMS based on the calendar year.  The file includes billing data for 100% of all Medicare fee-for-service claims for hospital outpatient services during the twelve months ending December 31.  The report is based on the most recent period available and is consistent with CMS cell size suppression policy.

Services are defined based on the revenue code for a line item.  Averages are based on units of service (i.e. the number of units of items or services delivered).