The MedPAR File contains inpatient hospital final action stay records. Each MedPAR record represents a stay in an inpatient hospital. Each MedPAR record may represent one claim or multiple claims, depending on the length of a beneficiary's stay and the amount of services used throughout the stay.
This file includes:
- (ICD-9 diagnosis),
- procedure (ICD-9 procedure code),
- Diagnosis Related Group (DRG),
- dates of service,
- reimbursement amount,
- hospital provider, and
- beneficiary demographic information
The Final Rule is published in the Federal Register usually by the first week of August. This file is derived from the MEDPAR file with a cutoff of six months after the end of the fiscal year (March file).
The Notice of Proposed Rule Making (NPRM) is published in the "Federal Register", usually available in April. This file is derived from the MEDPAR file with a cutoff of three months after the end of the fiscal year (December file).