ICD-10 Code K60.50 – Anorectal fistula, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.50 – Anorectal fistula, unspecified
What it is
This code identifies an abnormal tract between the anorectal canal and nearby skin or tissue when the specific type is not documented. Use it when the record confirms an anorectal fistula but does not specify its exact anatomy.
Clinical signs
Typical findings include persistent drainage near the anus, local irritation, pain, or recurrent perianal infection. Clinical features vary; refer to documentation.
When to use this code
Use K60.50 when the clinician documents an anorectal fistula without further detail about location, complexity, or cause. It also fits when the note confirms a fistula but does not distinguish a perianal, anal, or other specified fistula. If the chart names a more specific fistula, code that instead.
Do not use for
Do not use this code for anal fissure, abscess alone, or a specifically documented fistula with a more precise ICD-10 option. Check documentation.
Coding tip
Query for specificity if the note only says “fistula” or “perianal drainage” without confirming an anorectal fistula.