| K51.80 | Other ulcerative colitis without complications | BILLABLE CODE |
| K51.81 | Other ulcerative colitis with complications | NON-BILLABLE CODE |
| K51.811 | Other ulcerative colitis with rectal bleeding | BILLABLE CODE |
| K51.812 | Other ulcerative colitis with intestinal obstruction | BILLABLE CODE |
| K51.813 | Other ulcerative colitis with fistula | BILLABLE CODE |
| K51.814 | Other ulcerative colitis with abscess | BILLABLE CODE |
| K51.818 | Other ulcerative colitis with other complication | BILLABLE CODE |
| K51.819 | Other ulcerative colitis with unspecified complications | BILLABLE CODE |
