ICD-10 Code K60.32 – Anal fistula, complex (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.32 – Anal fistula, complex
What it is
K60.32 identifies a complex anal fistula, an abnormal tunnel connecting the anal canal or rectum to the skin. Use it when documentation specifically describes the fistula as complex.
Clinical signs
Typical findings include persistent perianal drainage, recurrent abscess, pain, and external opening near the anus. Clinical features vary; refer to documentation.
When to use this code
Use K60.32 when the provider documents a complex anal fistula, including cases with branching tracts, recurrent disease, or involvement that makes the fistula more difficult to treat. Code it from operative reports, specialist notes, or imaging if the diagnosis is clearly stated.
If the record only says “anal fistula” without complexity, check documentation before assigning this code. Do not infer complexity from symptoms alone.
Do not use for
Do not use this code for a simple anal fistula, perianal abscess without fistula, or nonspecific anal pain. Check documentation if the type is unclear.
Coding tip
Assign K60.32 only when the word “complex” is documented or the provider clearly describes a complex fistula pattern.