| ICD-10 Code | Description |
| K63.0 | Abscess of intestine |
| K63.1 | Perforation of intestine (nontraumatic) |
| K63.2 | Fistula of intestine |
| K63.3 | Ulcer of intestine |
| K63.4 | Enteroptosis |
| K63.5 | Polyp of colon |
| K63.81 | Dieulafoy lesion of intestine |
| K63.8211 | Small intestinal bacterial overgrowth, hydrogen-subtype |
| K63.8212 | Small intestinal bacterial overgrowth, hydrogen sulfide-subtype |
| K63.8219 | Small intestinal bacterial overgrowth, unspecified |
| K63.822 | Small intestinal fungal overgrowth |
| K63.829 | Intestinal methanogen overgrowth, unspecified |
| K63.89 | Other specified diseases of intestine |
| K63.9 | Disease of intestine, unspecified |
