SEER Program Coding and Staging Manual

SEER Program Coding and Staging Manual 2026

SEER Program Coding and Staging Manual 2026 (PDF, 1.8 MB) (released September 2025)
Appendix A - County Codes (PDF, 500 KB)
Appendix B - Country and State Codes (PDF, 459 KB)
Appendix C - Site-Specific Coding Modules
Appendix D - Race and Nationality Descriptions (PDF, 228 KB)
Appendix E - Reportable and Non-reportable Examples: PDF (PDF, 176 KB) or Excel (XLSX, 26 KB)
Summary of Changes (September 2025) (PDF, 330 KB) - provides the list of changes included in this release.

The 2027 manual is to be used for cases diagnosed January 1, 2027 and forward.

SEER Program Coding and Staging Manual 2027 (PDF, 1.7 MB) (released September 2026)
Appendix A - County Codes (PDF, 501 KB)
Appendix B - Country and State Codes (PDF, 459 KB)
Appendix C - Site-Specific Coding Modules
Appendix D - Race and Nationality Descriptions (PDF, 232 KB)
Appendix E - Reportable and Non-reportable Examples: PDF (PDF, 276 KB) or Excel (XLSX, 29 KB)
Summary of Changes (September 2026) (PDF, 300 KB) - provides the list of changes included in this release.

See the SEER Research Data pages to find out how to access the SEER data.