ICD-10 Code K51.419 – Inflammatory polyps of colon with unspecified complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K51.419 – Inflammatory polyps of colon with unspecified complications
What it is
This code identifies inflammatory polyps in the colon associated with ulcerative colitis when the complication is not specified. Use it when the record clearly states inflammatory polyps and does not name a more specific complication.
Clinical signs
Findings may include colonoscopic evidence of inflammatory polyps, often in the setting of chronic colitis. Clinical features vary; refer to documentation for the exact complication or disease activity.
When to use this code
Use K51.419 when the provider documents inflammatory polyps of the colon and does not specify the complication type. It is appropriate for coding endoscopy, pathology, or problem-list documentation that links the polyps to ulcerative colitis.
If the note names a different complication or gives a more specific ulcerative colitis subtype, code that information instead. Check documentation when the relationship to colitis is unclear.
Do not use for
Do not use this code for non-inflammatory colon polyps, such as adenomatous or hyperplastic polyps. Also avoid it when the complication is specified differently or not documented.
Coding tip
Verify that the record links the polyps to ulcerative colitis before assigning K51.419.