Available CMS Data

The research files listed below, created by the NIA Data LINKAGE Program (LINKAGE), link HRS data to detailed information about health care utilization from records maintained by the Centers for Medicare & Medicaid Services (CMS). Learn more about the application process.

Note: The NIA Data LINKAGE Program was formerly known as the Medicare and Medicaid Resource Information Center (MedRIC).

Data Type Available Years
Medicare Enrollment Data
Denominator (DN) 1991 - 1998
Master Beneficiary Summary File (MBSF): Base – Segment (A/B/C/D) 1999 - 2021
Medicare Summary Files
Master Beneficiary Summary File (MBSF): Chronic Conditions 1999 - 2020
Master Beneficiary Summary File (MBSF): Cost & Utilization 1999 - 2020
Master Beneficiary Summary File (MBSF): Other Chronic or Potentially Disabling Conditions 2000 - 2020
Medicare Part A & B Claims Data
Medicare Carrier (PB) Claims 1991 - 2021
Medicare Durable Medical Equipment (DM) Claims 1991 - 2021
Medicare Home Health (HH) Claims 1991 - 2021
Medicare Hospice (HS) Claims 1991 - 2021
Medicare Inpatient (IP) Claims 1991 - 2021
Medicare Outpatient (OP) Claims 1991 - 2021
Medicare Skilled Nursing Facility (SN) Claims 1991 - 2021
MedRIC-Built Medicare Provider Analysis & Review (MedPAR) 1991 - 2020
Medicare Part C Claims Data
Medicare Carrier Encounter Claims 2015 - 2019
Medicare Durable Medical Equipment (DME) Encounter 2015 - 2019
Medicare Home Health Agency (HH) Encounter Claims 2015 - 2019
Medicare Inpatient (IP) Encounter Claims 2015 - 2019
Medicare Outpatient (OP) Encounter Claims 2015 - 2019
Medicare Skilled Nursing Facility (SNF) Encounter Claims 2015 - 2019
Other Data
Medicare Part D Medication Therapy Management (MTM) 2013 - 2019
Inpatient Rehab Facility-Patient Assessment Instrument (IRF-PAI) 2002 - 2020
Long Term Care Minimum Data Set (MDS) 1999 - 2021
Medicare Part D Prescription Drug Event (PDE) 2006 - 2021
Outcome and Assessment Information Set (OASIS) 1999 - 2020
Medicaid Analytic Extracts (MAX) and Summary Files 1999 - 2012

Encryption Level

For most Medicare and Medicaid files (all except Medicare PDE) researchers may apply for three different levels of data:

  • Level 1: The standard release, which contains enrollment and utilization information but omits geographic identifiers and masks provider identifiers, which should meet the needs of most users

  • Level 2: A geographic release, which adds beneficiary state, county and zip code to the above

  • Level 3: A provider release, which includes complete provider identifiers and geographic information for respondents and providers.

Documentation