ICD-10 Code K51.414 – Inflammatory polyps of colon with abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K51.414 – Inflammatory polyps of colon with abscess
What it is
This code identifies inflammatory polyps in the colon when an abscess is documented. It is used for a colonic inflammatory polyp associated with ulcerative colitis and a localized collection of pus.
Clinical signs
Patients may have rectal bleeding, diarrhea, abdominal pain, or mucus in the stool. Clinical features vary; refer to documentation, especially when endoscopy or pathology confirms both inflammatory polyps and abscess.
When to use this code
Use K51.414 when the provider documents inflammatory polyps of the colon and specifically notes an abscess. This may appear in colonoscopy, pathology, or discharge documentation tied to ulcerative colitis. Code it only when the abscess is clearly linked to the polyp condition.
Do not use for
Do not use this code for benign colon polyps without inflammatory disease or for abscesses not documented with inflammatory polyps. Check documentation if the record only says colitis, polyp, or abscess without the required combination.
Coding tip
Look for explicit provider wording that connects the inflammatory polyp and abscess before assigning K51.414.