Histology Coding Rules: Colon/Rectum
6. (Continued) Example: Cecal tumor, solid carcinoma with
focal signet ring cell carcinoma Solid carcinoma Signet ring cell carcinoma
Answer: 8230/3 Solid carcinoma
Example: The single lesion of the cecum is described as solid carcinoma with focal signet ring cell carcinoma. “Focal” is not a term that describes tumor majority. For this example, solid carcinoma is the tumor majority and should be recorded as the histology. The correct code is 8230/3.