Pathology/Lab Coding Alert

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Let Pathology Report Determine Behavior

Question: I'm confused as to whether tubulovillous adenoma colon polyps are benign or uncertain behavior -- what is the correct ICD-9 code for this condition?Maine SubscriberAnswer: The ICD-9 book will lead you to 211.3 (Benign neoplasm of colon), although some circumstances would allow you to report 235.2 (Neoplasm of uncertain behavior of stomach, intestines, and rectum).When you look up tubulovillous adenoma in the ICD-9 alphabetical index, you'll see that it's listed with morphology code M8263/0 but is not cross-referenced to any code. The /0 in the morphology table means "benign," so you should turn to the neoplasm table for benign intestine, large, colon -- which  leads to 211.3.Follow pathology report: You should always code a specimen based on the pathologist's determination, which may vary from the ICD-9 statement regarding the "usual" neoplasm behavior. Because the condition is a combination of the tubular and villous adenomas, the pathologist may indicate that the condition [...]
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