Research Data Assistance Center (ResDAC)
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Medicare Data Documentation
Utilization and Enrollment Files
Utilization and Enrollment Files
(Data Documentation is sometimes referred to as data dictionaries, file layouts, and data layouts)
ResDAC Disclosure Statement:
This resource is for reference purposes only. Record layouts may vary, users should not use these layouts to develop programming language for specific data files. Please contact ResDAC with questions about the data files.
Research Identifiable Files(To browse data variable descriptions, download data dictionaries (pdf or text), or download SAS input statements, click on the links below)
Inpatient, Skilled Nursing Facility, Outpatient, Home Health Agency, Hospice
- Medicare Institutional Data (Version I, Variable Block Data) - current version
- Medicare Institutional Data (Version H, Variable Block Data)
Carrier [ Old name: Physician/Supplier ], Durable Medical Equipment
- Medicare Non-Institutional Data (Version I, Variable Block Data) - current version
- Medicare Non-Institutional Data (Version H, Variable Block Data)
Medicare Denominator File
Medicare MedPAR FileMedicare Beneficiary Annual Summary File (BASF)
Limited Data Set (LDS) Files
Data Dictionaries (PDF)
- LDS Standard Analytical Files
- Inpatient
- Skilled Nursing Facility (SNF)
- Outpatient
- Home Health Agency (HHA)
- Hospice
- Carrier
- Durable Medical Equipment (DME)
- MedPAR File: National, State, and SNF
- LDS Denominator File
- LDS Outpatient PPS
- LDS Outpatient PPS Partial Hospitalization Program
- LDS Inpatient Psychiatric PPS
SAS Input Statements
- LDS Standard Analytical Files