ICD-10 Code K60.412 – Rectal fistula, simple, persistent (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.412 – Rectal fistula, simple, persistent
What it is
This code identifies a persistent, simple fistula involving the rectum. It indicates an abnormal passage that remains open and is documented as uncomplicated by additional complexity.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include ongoing drainage, local irritation, or a visible opening consistent with a fistulous tract.
When to use this code
Use this code when the provider documents a rectal fistula as simple and persistent. Apply it when the record clearly supports a chronic fistulous tract without more complex features. Check documentation if the note also mentions abscess, Crohn’s disease, or another underlying condition.
Do not use for
Do not use this code for anal fistulas, perianal disease, or fistulas described as complex, recurrent, or with abscess unless documentation specifically supports K60.412. Check documentation.
Coding tip
Code only when the documentation states both rectal location and persistence; otherwise, query for clarification.