ICD-10 Code K60.419 – Rectal fistula, simple, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.419 – Rectal fistula, simple, unspecified
What it is
This code identifies a rectal fistula that is described as simple but not further specified in the record. Use it when documentation confirms a rectal fistula and does not identify a more exact type or cause.
Clinical signs
Clinical features vary; refer to documentation. Patients may have persistent drainage, local irritation, pain, or recurrent infection, but you should code only what is documented and supported by the provider.
When to use this code
Use K60.419 when the chart states rectal fistula, simple, and gives no further detail such as complexity, location, or related disease. It also fits when the provider confirms the diagnosis but does not specify another more precise rectal fistula code.
If the note describes a different anorectal fistula type or a fistula linked to another condition, verify the documentation before assigning this code. Check documentation when the anatomy or etiology is unclear.
Do not use for
Do not use this code for anal fistula, perianal fistula, or fistulas with a clearly documented alternate site or cause. If the record does not support a rectal fistula, choose a more accurate diagnosis.
Coding tip
Confirm the word “rectal” in the provider note; “anal” and “rectal” are not interchangeable for code selection.