ICD-10-CM > K00-K95 > K55-K64 > K63 K63 Other diseases of intestine Non-Billable/Non-Specific Codes K63.0Abscess of intestineK63.1Perforation of intestine (nontraumatic)K63.2Fistula of intestineK63.3Ulcer of intestineK63.4EnteroptosisK63.5Polyp of colonK63.8Other specified diseases of intestineK63.81Dieulafoy lesion of intestineK63.82Intestinal microbial overgrowthK63.821Small intestinal bacterial overgrowthK63.8211Small intestinal bacterial overgrowth, hydrogen-subtypeK63.8212Small intestinal bacterial overgrowth, hydrogen sulfide-subtypeK63.8219Small intestinal bacterial overgrowth, unspecifiedK63.822Small intestinal fungal overgrowthK63.829Intestinal methanogen overgrowth, unspecifiedK63.89Other specified diseases of intestineK63.9Disease of intestine, unspecified