| K51 | Ulcerative colitis |
| | Ulcerative (chronic) pancolitis |
| | Ulcerative (chronic) pancolitis, without complications |
| | Ulcerative (chronic) pancolitis with complications |
| | Ulcerative (chronic) pancolitis with rectal bleeding |
| | Ulcerative (chronic) pancolitis with intestinal obstruction |
| | Ulcerative (chronic) pancolitis with fistula |
| | Ulcerative (chronic) pancolitis with abscess |
| | Ulcerative (chronic) pancolitis with other complication |
| | Ulcerative (chronic) pancolitis with unspecified complications |
| | Ulcerative (chronic) proctitis |
| | Ulcerative (chronic) proctitis, without complications |
| | Ulcerative (chronic) proctitis with complications |
| | Ulcerative (chronic) proctitis with rectal bleeding |
| | Ulcerative (chronic) proctitis with intestinal obstruction |
| | Ulcerative (chronic) proctitis with fistula |
| | Ulcerative (chronic) proctitis with abscess |
| | Ulcerative (chronic) proctitis with other complication |
| | Ulcerative (chronic) proctitis with unspecified complications |
| | Ulcerative (chronic) rectosigmoiditis |
| | Ulcerative (chronic) rectosigmoiditis, without complications |
| | Ulcerative (chronic) rectosigmoiditis with complications |
| | Ulcerative (chronic) rectosigmoiditis with rectal bleeding |
| | Ulcerative (chronic) rectosigmoiditis with intestinal obstruction |
| | Ulcerative (chronic) rectosigmoiditis with fistula |
| | Ulcerative (chronic) rectosigmoiditis with abscess |
| | Ulcerative (chronic) rectosigmoiditis with other complication |
| | Ulcerative (chronic) rectosigmoiditis with unspecified complications |
| | Inflammatory polyps of colon |
| | Inflammatory polyps of colon, without complications |
| | Inflammatory polyps of colon with complications |
| | Inflammatory polyps of colon with rectal bleeding |
| | Inflammatory polyps of colon with intestinal obstruction |
| | Inflammatory polyps of colon with fistula |
| | Inflammatory polyps of colon with abscess |
| | Inflammatory polyps of colon with other complication |
| | Inflammatory polyps of colon with unspecified complications |
| | Left sided colitis |
| | Left sided colitis, without complications |
| | Left sided colitis with complications |
| | Left sided colitis with rectal bleeding |
| | Left sided colitis with intestinal obstruction |
| | Left sided colitis with fistula |
| | Left sided colitis with abscess |
| | Left sided colitis with other complication |
| | Left sided colitis with unspecified complications |
| | Other ulcerative colitis |
| | Other ulcerative colitis, without complications |
| | Other ulcerative colitis with complications |
| | Other ulcerative colitis with rectal bleeding |
| | Other ulcerative colitis with intestinal obstruction |
| | Other ulcerative colitis with fistula |
| | Other ulcerative colitis with abscess |
| | Other ulcerative colitis with other complication |
| | Other ulcerative colitis with unspecified complications |
| | Ulcerative colitis, unspecified |
| | Ulcerative colitis, unspecified, without complications |
| | Ulcerative colitis, unspecified, with complications |
| | Ulcerative colitis, unspecified with rectal bleeding |
| | Ulcerative colitis, unspecified with intestinal obstruction |
| | Ulcerative colitis, unspecified with fistula |
| | Ulcerative colitis, unspecified with abscess |
| | Ulcerative colitis, unspecified with other complication |
| | Ulcerative colitis, unspecified with unspecified complications |
