It would be coded as K63.5 Polyp of colon.
There is a coding clinic to refer to - 1st Quater ICD-10 2017 Pf. 15
Question:
Coding Clinic, Second Quarter 2015, page 14, advised to assign code K63.5, Polyp of colon, when the physician documents a hyperplastic colon polyp regardless of the location in the colon. Therefore, would a hyperplastic polyp at any colonic site (e.g., ascending, descending, sigmoid, etc.) be assigned code K63.5, Polyp of colon, even though the ICD-10-CM subcategorizes specific locations of neoplastic polyps? For example, a patient had a colonoscopy with removal of an ascending colon polyp. No additional information is available regarding histology. Would code D12.2, Benign neoplasm of ascending colon, or code K63.5, Polyp of colon, be reported?
Answer:
ICD-10-CM does not classify adenomatous (neoplastic) polyps of the colon the same as hyperplastic polyps. Code K63.5 describes a hyperplastic polyp and is the default when the type of polyp is not specified as adenomatous/ neoplastic. Hyperplastic polyps, by definition, are not neoplastic, and are typically followed on a much different surveillance protocol than adenomatous polyps. Category D12, Benign neoplasm of colon, rectum, anus and anal canal, classifies neoplastic polyps according to anatomic location.
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