SEER Inquiry System - Question 20000465 Details

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Produced: 10/16/2025 3:12 PM

Question 20000465

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Inquiry Details

References:

#1: SEER Program Code Man, 3rd Ed, 102

#2: 2004 SEER Manual, 97, C-699

Question:

Grade, Differentiation--Lymphoma: What code is used to represent this field when the only grade/differentiation given is "low grade", "intermediate grade" or "high grade"?

Discussion:

Answer:

Code the Grade, Differentiation field to 9 [cell type not determined, not stated or not applicable]. For lymphomas, do not code the descriptions "high grade," "low grade," and "intermediate grade" in the Grade, Differentiation field. These terms refer to categories in the Working Formulation and not to histologic grade for lymphoma histologies.

Generally, for histologies other than Non-Hodgkin lymphoma, the Grade, Differentiation field is coded to 2 [low grade], 3 [intermediate grade] and 4 [high grade] for most cancers.

Cancer Site Category:

Lymphoma

Data Item Category:

N/A

Other Category:

N/A

Year:

2000