K31.A13
ICD-10-CMGastric intestinal metaplasia without dysplasia, involving the fundus
This code signifies the presence of intestinal metaplasia within the fundus of the stomach, a condition where the normal gastric lining is replaced by cells resembling those of the intestine. Importantly, this specific code indicates that there is no evidence of dysplasia, meaning the cellular changes are not yet precancerous. It represents a benign finding, though it is considered a precursor lesion for gastric cancer.
This code is appropriate when pathology reports confirm intestinal metaplasia confined to the gastric fundus, explicitly stating the absence of dysplasia. It should be used for patients undergoing endoscopic surveillance or evaluation for gastrointestinal symptoms where biopsies reveal this specific histological finding. Documentation must clearly specify the location (fundus) and the lack of dysplasia.
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