ICD-10 Code K60.323 – Anal fistula, complex, recurrent (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.323 – Anal fistula, complex, recurrent
What it is
K60.323 identifies a complex anal fistula that has recurred after prior treatment or healing. It refers to an abnormal tract between the anal canal and skin that is not simple and has come back.
Clinical signs
Typical findings include persistent or intermittent drainage near the anus, local irritation, pain, and a history of prior fistula repair or recurrence. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states a complex anal fistula and documents recurrence, persistence, or return after previous management. You should code it when the provider specifies the fistula is recurrent, even if the current note focuses on drainage or perianal discomfort.
Do not use for
Do not use this code for a simple anal fistula, an acute perianal abscess without a fistula, or a fistula that is not documented as recurrent. Check documentation.
Coding tip
Confirm both elements—complex and recurrent—before assigning K60.323.