ICD-10 Code K83.3 – Fistula of bile duct (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K83.3 – Fistula of bile duct
What it is
K83.3 identifies an abnormal passage between a bile duct and another structure. It usually reflects a pathologic connection that allows bile to leak or drain in an unintended way.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include bile drainage, persistent abdominal symptoms, or evidence of an abnormal biliary connection on imaging or procedural reports.
When to use this code
Use K83.3 when the provider documents a fistula involving the bile duct. It may be appropriate after surgery, trauma, infection, or other biliary disease if the record confirms the fistulous tract. Code the documented condition, not a suspected leak alone.
Do not use for
Do not use this code for unspecified bile duct disorders or for biliary obstruction without a documented fistula. If the chart only says “possible” fistula, check documentation before coding.
Coding tip
Verify the exact anatomic site and the related cause in the operative note, imaging report, or discharge summary.