ICD-10 Code K60.52 – Anorectal fistula, complex (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.52 – Anorectal fistula, complex
What it is
K60.52 identifies a complex anorectal fistula, an abnormal tract connecting the anal canal or rectum to nearby skin or deeper tissues. Use this code when documentation clearly states the fistula is complex.
Clinical signs
Clinical features may include persistent drainage near the anus, recurrent abscesses, pain, or irritation. Complex fistulas often have branching tracts, multiple openings, or involvement that makes them harder to treat; check documentation.
When to use this code
Use K60.52 when the provider documents a complex anorectal fistula, including terms such as complex perianal fistula or fistula with multiple tracts. This code fits confirmed anatomy-based diagnoses, not symptoms alone. If the record is unclear, check documentation.
Do not use for
Do not use this code for a simple anorectal fistula or for an anorectal abscess without a documented fistula. If the note only describes drainage, pain, or suspected disease, check documentation before assigning K60.52.
Coding tip
Look for wording that distinguishes complex from simple disease, such as branching, recurrent, or multiple tracts, and code only when the documentation supports it.