SEER Program Coding and Staging Manual

SEER Program Coding and Staging Manual 2025

SEER Program Coding and Staging Manual 2025 (PDF, 1.8 MB) (updated January 2025)
Appendix A - County Codes (PDF, 491 KB)
Appendix B - Country and State Codes (PDF, 442 KB)
Appendix C - Site-Specific Coding Modules
Appendix D - Race and Nationality Descriptions (PDF, 206 KB) (updated January 2025)
Appendix E - Reportable and Non-reportable Examples: PDF (PDF, 281 KB) or Excel (XLSX, 27 KB)
Summary of Changes (January 2025) (PDF, 452 KB) - provides the list of changes included in this release.

The 2026 manual is to be used for cases diagnosed January 1, 2026 and forward.

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, 199 KB) or Excel (XLSX, 26 KB)
Summary of Changes (September 2025) (PDF, 330 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.