ICD-10 Code K94.13 – Enterostomy malfunction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K94.13 – Enterostomy malfunction
What it is
K94.13 identifies a malfunction of an enterostomy, meaning the surgically created opening into the intestine is not functioning as intended. Use it when the problem is with the stoma or its function, not the underlying disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented problems include leakage, obstruction, poor output, retraction, prolapse, or difficulty with appliance fitting.
When to use this code
Use K94.13 when the provider documents enterostomy malfunction as the reason for evaluation, treatment, or follow-up. It fits cases where the stoma itself is the issue, such as impaired drainage or mechanical failure. If the note only describes a complication without naming the enterostomy, check documentation.
Do not use for
Do not use this code for infections, skin irritation, or the disease that led to the enterostomy unless malfunction is also documented. Check documentation if the problem is a general postoperative issue rather than stoma malfunction.
Coding tip
Code the specific ostomy complication documented by the provider, and avoid assuming malfunction from symptoms alone.