Histology (Pre-2007)--All Sites: What code is used to represent the histology with a final diagnosis of adenocarcinoma, signet ring type when the comment suggests a "mixed histologic pattern"? See discussion.
Histology (Pre-2007): What codes are used to represent the histology "mucinous adenocarcinoma arising in a villous adenoma" and "mucinous adenocarcinoma arising in a villous glandular polyp"? See discussion.
Histology (Pre-2007)--Breast: For a path diagnosis of ductal carcinoma in situ, cribriform type with apocrine features, does the term "apocrine" modify the term cribriform or does it represent another type of ductal carcinoma in situ? See discussion.
Histology (Pre-2007)--Kidney: What code is used to represent the histology "renal cell carcinoma with granular cell morphology"? Kidney primary with diagnosis of renal cell CA with granular cell morphology. Do we code as granular cell carcinoma? Is the term "morphology" synonymous with "type"? See discussion.
Histology (Pre-2007): Can adenocarcinoma in either a villous or tubulovillous polyp or adenoma be coded as histology for sites other than colon or rectum? See discussion.
Histology (Pre-2007): What code is used to represent the histology "adenocarcinoma in a tubulovillous adenoma with a mucinous component, the mucinous component is less than 50%"? See discussion.
Histology (Pre-2007)--Colon: What code is used to represent histology when the surgeon describes a sessile polyp and the final path diagnosis is stated as: "Rectal sessile polyp: Invasive moderately differentiated adenocarcinoma" (pathologist does not state that it is "arising in a sessile polyp")?
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