ICD-10 Code K51.814 – Other ulcerative colitis with abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K51.814 – Other ulcerative colitis with abscess
What it is
K51.814 identifies ulcerative colitis that does not fit a more specific subtype and is documented with an abscess. Use it when the record clearly links the colitis to an abscess, usually an intra-abdominal or pericolonic collection.
Clinical signs
Patients may have chronic inflammatory bowel disease symptoms, such as abdominal pain, diarrhea, rectal bleeding, and urgency. Clinical features vary; refer to documentation for the abscess location and whether it is confirmed by imaging, examination, or operative findings.
When to use this code
Use this code when the provider documents other ulcerative colitis and also documents an abscess associated with the condition. It fits cases where the chart does not specify a more exact ulcerative colitis subtype, yet the abscess is part of the diagnosis. Check documentation if the abscess is separate from the colitis.
Do not use for
Do not use this code for Crohn disease, infectious colitis, or ulcerative colitis without abscess. If the record says only “abscess” without linking it to ulcerative colitis, code the abscess diagnosis separately if appropriate.
Coding tip
Confirm that the abscess is documented as associated with ulcerative colitis before assigning K51.814.