ICD-10 Code K60.312 – Anal fistula, simple, persistent (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K60.312 – Anal fistula, simple, persistent
What it is
This code identifies a simple anal fistula that persists over time. It means an abnormal tract connects the anal canal to nearby skin and remains ongoing rather than healed.
Clinical signs
Typical findings include recurrent drainage near the anus, local irritation, and discomfort. Clinical features vary; refer to documentation if the record does not clearly describe the fistula as simple and persistent.
When to use this code
Use K60.312 when the provider documents a simple anal fistula that is still present or chronic. Code it when the note clearly states persistence, recurrence, or an ongoing fistulous tract. If the description is vague, check documentation before assigning this code.
Do not use for
Do not use this code for anal fissure, abscess without fistula, or a fistula that is not documented as simple and persistent. Check documentation if complexity, Crohn disease, or another cause is specified.
Coding tip
Match the code to the exact wording in the record, especially the terms “simple” and “persistent.”