Other diseases of intestine (K63)

The ICD-10 code section K63 covers a variety of other diseases affecting the intestine that do not fall under more specific categories. These include uncommon or complex intestinal conditions such as abscesses, perforations, fistulas, ulcers, and intestinal overgrowth syndromes.

For example, K63.0 codes for an abscess of intestine, often linked with chronic inflammation conditions like Crohn’s disease or ulcerative colitis. The term “ulcerative proctitis” is one synonym associated with this code, helping coders recognize its use for intestinal abscesses complicated by chronic ulcerative disease. K63.1 identifies nontraumatic perforations of the intestine, which can involve portions such as the rectum, jejunum, or sigmoid colon, providing clarity for spontaneous or inflammatory bowel ruptures. Fistulas, abnormal connections within or from the intestine, are captured by K63.2, with synonyms like “enterocolic fistula” or “fecal fistula” clarifying different specific forms. Ulcers of various intestinal regions, often linked to autoimmune or infectious causes, fall under K63.3. Intestinal microbial or fungal overgrowth, including the specific subtype small intestinal bacterial overgrowth (SIBO), are coded in K63.82 and its subcategories, important for diagnosing related digestive issues. Other unique conditions like Dieulafoy lesions (K63.81) or polyps of the colon (K63.5) are also included here.

In summary, ICD-10 code K63 and its subcodes are essential for classifying less common but clinically significant intestinal diseases, aiding both healthcare providers and coders in accurately documenting varied intestinal pathologies, such as abscesses, perforations, fistulas, ulcers, microbial overgrowth, and polyps.