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Inpatient Definitions and Methodology

Preliminary FY 2008 Statistics for the Top 20 MS-DRGs

All information in this report is taken from an early release of the Medicare Provider Analysis and Review (MedPAR) file for FY 2008. This early release was provided by CMS and is based on Medicare fee-for-service paid claims for discharges during the nine months ending June 30, 2008. The report is consistent with CMS Data Release policies.

The twenty MS-DRGs with the highest numbers of discharges are ranked by volume and all other MS-DRGs are summarized:

  • Number of Medicare Discharges - total number of claims for the MS-DRG.
  • Average Length of Stay - total patient day divided by the number of discharges.
  • Average Charges - total gross charges divided by the number of discharges
  • Average Reimbursed - Medicare Reimbursement is the amount paid to the hospital and/or patient by Medicare for the services reported on a bill. This amount does not include any capital pass-thru amount or organ acquisition amount. In addition, it excludes amounts paid by or on behalf of the patient (e.g. deductibles or coinsurance).  The average reported for a MS-DRGs is total Medicare reimbursement divided by the number of discharges.

A brief description of the Medicare Inpatient Prospective Payment System is provided to explain the system, MS-DRGs, the case mix index, etc.