ICD-10 Code K60.4 – Rectal fistula (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.4 – Rectal fistula
What it is
K60.4 identifies a fistula involving the rectum, meaning an abnormal passage connects the rectum to another surface or organ. Use it when documentation specifically states rectal fistula.
Clinical signs
Clinical features vary; refer to documentation. Patients may have persistent drainage, local irritation, pain, or recurrent infection related to the abnormal tract.
When to use this code
Use K60.4 when the provider documents a rectal fistula, including cases described as an abnormal rectal tract or communication. It is appropriate when the record clearly identifies the rectum as the source. If the note only says fistula without location, check documentation before coding.
Do not use for
Do not use this code for anal fistula, perianal fistula, or other fistulas unless the rectum is specifically documented. Check documentation when the anatomy is unclear.
Coding tip
Verify the exact anatomic site in the operative note, imaging report, or assessment before assigning K60.4.