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.

1: Cancer cases from the expansion registries are diagnosed in 2000 or later.

2: All years of MBSF enrollment information will automatically be provided for the requested cancer cases and, if applicable, for the non-cancer controls.

3: Persons added in LINK2022 and beyond will only have MDS and OASIS data from 2010+.

4: The CoRe Files represent a summarization of the available Medicare enrollment and claims data among persons included in the specified Cancer File (diagnosis) years who met the CoRe cohort inclusion criteria: persons who are 66+ years old at malignant cancer diagnosis in 2000+ and were continuously enrolled in fee-for-service Parts A and B from 12 months prior to cancer diagnosis through at least one month post diagnosis and/or continuously enrolled in Part D from 4 months prior to cancer diagnosis through at least one month post diagnosis. Note: persons diagnosed at autopsy or death certificate were excluded, as are persons who died during the month of diagnosis.

5: Limited to persons who were found in the SEER-Medicare data and in the Department of Housing and Urban Development housing assistance data.

6: Originally created in 2017 to include year’s 1995-2015. Updated in 2020 to include year’s 2016-2017 and in 2022 to include year’s 2018-2019.

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).