SEER-Medicare: Available Files by Year

Note: Given a new agreement between NCI and CMS, starting with the data released in 2020 all Medicare data included in SEER-Medicare will be obtained from CMS’s CCW. As such, in 2020 and moving forward the included Medicare data will only be available starting in 1999. The SEER data included in SEER-Medicare will also be truncated to include cases diagnosed beginning in 1999.

File Name Data available for Cancer Cases (see note) Data Available for Non-Cancer Cases (5% sample)
SEER Cancer Data
Cancer File Cancer diagnosed 1999-2019* N/A
5% Cancer File Cancer diagnosed 1999-2019* N/A
Medicare Enrollment
Master Beneficiary Summary File (MBSF)-Base (A/B/C/D) 1999-2019 1999-2019
Base (A/B/C/D) 1999-2019 1999-2019
Chronic Conditions Flags 27 conditions 1999-2019 1999-2019
Chronic Conditions Flags 30 conditions 2017-2019 2017-2019
Other Chronic or Potentially Disabling Conditions 2000-2019 2000-2019
Part D Plan Characteristics File -Base, Premium, Cost Sharing Tier, Service Area, Special Needs Plans, Multi-year Crosswalk Files 2007-2019
Medicare Claims and Events Files
Medicare Provider Analysis and Review (MEDPAR) 1999-2019 1999-2019
Carrier Claims (NCH) - Base, Line, Demonstration/Innovation Code Files 1999-2019 1999-2019
Outpatient (OUTPAT) - Base, Revenue Center, Condition Code, Occurrence Code, Span Code, Value Code, Demonstration/Innovation Code Files 1999-2019 1999-2019
Home Health Agencies (HHA) - Base, Revenue Center, Condition Code, Occurrence Code, Span Code, Value Code, Demonstration/Innovation Code Files 1999-2019 1999-2019
Hospice - Base, Revenue Center, Condition Code, Occurrence Code, Span Code, Value Code, Demonstration/Innovation Code Files 1999-2019 1999-2019
Durable Medical Equipment (DME) - Base, Line and Demonstration/Innovation Code Files 1999-2019 1999-2019
Part D Event (PDE)- with Drug Characteristics File appended 2007-2019 2007-2019
Formulary File 2010–2019
Prescriber Characteristics and Bridge Files 2007–2019
Pharmacy Characteristics and Bridge Files 2007–2019
Part D Medication Therapy Management File 2013–2019 2013–2019
Medicare Assessment Files
Minimum Data Set (MDS) 1999-2019 1999-2019
Outcome and Assessment Information Set (OASIS) 1999-2019 1999-2019
Ancillary Files
Medicare Data on Provider Practice and Specialty (MD-PPAS) 2008-2019
Hospital Characteristics File 1996, 1998, 2000-2016
Mergers and Acquistions File Through 2016
Census Tract Characteristics File Based on 1990, 2000 Census and 2008-2012 American Community Survey data
Zip Code Characteristics File Based on 1990, 2000 Census and 2008-2012 American Community Survey data
Hospital Referral Regions -Zip code crosswalk Through 2017

* Cancer cases from the expansion registries are diagnosed in 2000 or later.
**All years of MBSF enrollment information will automatically be provided for the requested cancer cases and, if applicable, for the non-cancer controls.
***Currently there is no 2019 data for non-cancer controls who were added to the Medicare 5% sample in 2019-2020; these data will be added as soon as possible.
****Currently there is no Part D MTM 2013-2019 data for cancer cases added in the LINK2022 (e.g., new cases diagnosed in 2018-2019); these data will be added as soon as possible.
*****Persons added in LINK2022 (e.g., data made available in late 2022) will only have MDS and OASIS data from 2010+

Hospital files containing hospital characteristics collected by CMS are available free of charge with NCI approval to those investigators with an approved SEER-Medicare application. See Provider Files for details.

The MDPPAS data provided to requestors will be project specific (e.g., the MDPPAS data will be restricted to include only providers who appear in the claims data for the specified project).

Last Updated: 13 Mar, 2023