ICD-10 Code I77.0 – Arteriovenous fistula, acquired (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I77.0 – Arteriovenous fistula, acquired
What it is
I77.0 identifies an acquired abnormal connection between an artery and a vein. It is not present at birth and usually reflects injury, surgery, or another underlying process.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a palpable thrill, audible bruit, visible pulsation, or signs of abnormal blood flow at the affected site.
When to use this code
Use this code when the provider documents an acquired arteriovenous fistula as the diagnosis. It may apply when the fistula is described as traumatic, postoperative, or otherwise acquired. Code only when the record clearly supports the condition.
Do not use for
Do not use this code for congenital arteriovenous fistula or for a vascular access fistula unless the documentation specifically states an acquired fistula. Check documentation if the record is unclear.
Coding tip
Confirm that the fistula is acquired and not congenital, and code the underlying cause when documented.