| K59 | Other functional intestinal disorders |
| | Constipation |
| | Constipation, unspecified |
| | Slow transit constipation |
| | Outlet dysfunction constipation |
| | Drug induced constipation |
| | Chronic idiopathic constipation |
| | Other constipation |
| | Functional diarrhea |
| | Neurogenic bowel, not elsewhere classified |
| | Megacolon, not elsewhere classified |
| | Toxic megacolon |
| | Other megacolon |
| | Anal spasm |
| | Other specified functional intestinal disorders |
| | Ogilvie syndrome |
| | Other specified functional intestinal disorders |
| | Functional intestinal disorder, unspecified |
