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SEER Inquiry System - Report
Produced: 11/26/2025 1:27 AM
Question 20031037
Inquiry Details
References:
#1: SEER Program Code Man, 3rd Ed. Appendix C
#2: SEER PCM, 3rd Ed, Rev 1. January 2003
Question:
Discussion:
Answer:
For cases diagnosed Jan 2003 and later:
The Number of Regional Lymph Nodes Examined field is blank for 2003+ cases.
Scope of reg lymph node surgery
Brain, Central nervous system - 9
Hematopoietic, reticuloendothelial, immunoproliferative & myeloproliferative disease - 9
Unknown & ill-defined primary - 9
Lymphomas - 9
History:
For cases diagnosed prior to Jan 2003:
Surgery Codes
Scope of reg lymph node surgery and Number of reg lymph nodes examined
Brain - 9 and 99
Central nervous system - no default codes for these fields
Leukemia - 9 and 99
Hematopoietic & reticuloendothelial - no default codes for these fields
Lymph nodes - 9 and 99
Ill-defined Sites - no default codes for scope of reg LN surg, 99 for number of nodes examined
Unknown site - 9 and 99
