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SEER Inquiry System - Report
Produced: 12/26/2024 7:23 PM
Question 20061088
Inquiry Details
References:
2004 SEER Manual, C-701-702. Appendix C
Question:
CS Extension--Lymphoma: If bilateral tonsils are involved with lymphoma, is it one or two regions of involvement and how is extension coded?
Discussion:
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 1-1-08 and later: Assign CS extension code 10 [involvement of a single lymph node region]. Bilateral tonsils are one organ/site.
See Note 1 under CS Extension. Tonsil is coded the same as a lymph node region.
History:
For cases diagnosed prior to 1-1-08: Assign CS extension code 11 [localized involvement of a single extralymphatic organ/site in the absence of any lymph node involvement; Multifocal involvement of one extralymphatic organ/site]. Bilateral tonsils are one organ/site.
