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SEER Inquiry System - Report
Produced: 03/03/2026 7:20 PM
Question 20061109
Inquiry Details
References:
2004 SEER Manual, C-383, C-473. Appendix C
Question:
CS Tumor Size--Lung/Breast: Explain why the SEER instructions differ from the CS Manual regarding priority order of sources to code tumor size? See Discussion.
Discussion:
Regarding the 2004 SEER Manual, Appendix C, Site Specific Coding Modules, Lung and Breast. The priority of sources for coding tumor size is Pathology, Operative Report, PE, imaging for breast and pathology, operative, endoscopic, and imaging for lung. This differs from the CS Manual instructions.
Answer:
This answer was provided in the context of CSv1 coding guidelines. The response may not be used after your registry database has been converted to CSv2.For cases diagnosed in 2007 and forward, follow the instructions in the 2007 SEER manual and the CS manual.
History:
For cases diagnosed from 2004 through 2006: The CS manual contains general instructions for coding CS tumor size, but does not provide site-specific instructions regarding the priority order of sources to be used. The 2004 SEER manual provides site-specific instructions for lung (page C-383)and breast (pg C-473). The priority order of sources listed in the SEER manual are specific to lung and breast. Use these for additional detail not found in the general CS tumor size instructions.
Cancer Site Category:
Breast, Lung
Data Item Category:
N/A
Other Category:
N/A
Year:
2006
