V.3.7.3 Coding Grade for Hematopoietic and Lymphoid Neoplasms

Cell Indicator (Codes 5, 6, 7, 8, 9)

Use these instructions for cases diagnosed on or after 01/01/2014 only.

For cases diagnosed on or before 12/31/2013, see Section V.3.5.7

 

Cell Indicator (Codes 5, 6, 7, 8) describes the lineage or phenotype of the cell. Codes 5, 6, 7, and 8 are used only for hematopoietic and lymphoid neoplasms. Code 9 indicates cell type not determined, not stated, or not applicable.

 

Coding Grade for Hematopoietic and Lymphoid Neoplasms:
  1. Determine the histology based on the current Hematopoietic and Lymphoid Neoplasm Manual [http://seer.cancer.gov/tools/heme/Hematopoietic_Instructions_and_Rules/].

 

  1. Determine the Cell Indicator by applying the “Grade of Tumor Rules” within the current Hematopoietic and Lymphoid Neoplasm Manual [http://seer.cancer.gov/tools/heme/Hematopoietic_Instructions_and_Rules/] to code the grade.

 

Grade codes for hematopoietic and lymphoid neoplasms

Terminology

Grade Code

T-cell; T-precursor

5
B-Cell; Pre-B; B-precursor

6
Null cell; Non T-non B

7
NK cell (natural killer cell)

8
Grade unknown, not stated, or not applicable

9
 

Note: This grading system is coded in a site-specific factor for the applicable CS schema.

 

 

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