ICD-10 Code K91.85 – Complications of intestinal pouch (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K91.85 – Complications of intestinal pouch
What it is
K91.85 identifies complications involving an intestinal pouch, usually a surgically created pouch after bowel surgery. Use it when the record documents a pouch-related postoperative problem rather than the underlying disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include pouch dysfunction, pain, inflammation, leakage, obstruction, or other postoperative complications tied to the pouch.
When to use this code
Use K91.85 when the provider documents a complication of an intestinal pouch and links the problem to the pouch itself. This may apply to postoperative follow-up, evaluation of pouch symptoms, or confirmed pouch-related complications. Check documentation for the specific complication.
Do not use for
Do not use this code for routine follow-up without a complication or for conditions unrelated to the pouch. If the chart only names the underlying bowel disease or a nonspecific postoperative issue, check documentation.
Coding tip
Assign K91.85 only when the complication is clearly documented as pouch-related and postoperative in nature.