Collaborative Stage

CS Site-Specific Factor 7
Percentage of Non-Endometrioid Cell Type in Mixed Histology Tumors

Note 1: Adenocarcinomas with mixed histology are graded according to the percentage of non-squamous or non-morular solid growth pattern. Morular growth pattern refers to well-defined, circumscribed, solid round nests of cells that fill and expand endometrial glands.
Note 2: Code based on the percentage of non-endometrioid cell type as stated on the pathology report. Only use a statement of Grade 1, Grade 2, or Grade 3 if it is based on the growth pattern. If grade based on growth pattern is not specified, use code 999.

Code	Description
001	5% or less of a non-squamous or non-morular solid growth pattern (Grade 1)
002	6% to 50% of a non-squamous or non-morular solid growth pattern (Grade 2)
003	More than 50% of a non-squamous or non-morular solid growth pattern (Grade 3)
987	Not applicable: Not an adenocarcinoma morphology Use this code for CorpusSarcoma and CorpusAdenosarcoma schemas
988	Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 988 may result in an edit error.)
999	Unknown or no information Not documented in patient record