Outpatient LDS

The Outpatient file contains final action, fee-for-service claims data submitted by institutional outpatient providers. Medicare Institutional provider numbers are not encrypted; however, physician identifiers, e.g. NPIs or UPINs are encrypted. Examples of institutional outpatient providers include hospital outpatient departments, rural health clinics, renal dialysis facilities, outpatient rehabilitation facilities, comprehensive outpatient rehabilitation facilities, and community mental health centers.

This file includes:

  • diagnosis (ICD-9 diagnosis)
  • Healthcare Common Procedure Coding System (HCPCS) codes,
  • dates of service,
  • reimbursement amount,
  • outpatient provider number,
  • revenue center codes, and
  • beneficiary demographic information
Availability: 
CY 1999-2015
Data File Classification
Program: 
Privacy Level: