V.3.6 Grade and Differentiation

Grade is a measurement of how closely the tumor cells resemble the parent tissue (organ of origin).  For Hematopoietic and Lymphoid Neoplasms, Codes 5, 6, 7, and 8 describe the lineage or phenotype of the cell.  Code 9 indicates the cell type was not determined, not stated or not applicable.  

Grade, Differentiation for solid tumors (Codes 1, 2, 3, 4, 9) and Cell Indicator for Lymphoid Neoplasms (Codes 5, 6, 7, 8, 9)

Note: These instructions pertain to the data item Grade, Differentiation or Cell Indicator.

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