ICD-10 Code K80.36 – Calculus of bile duct with acute and chronic cholangitis without obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.36 – Calculus of bile duct with acute and chronic cholangitis without obstruction
What it is
This code identifies a stone in the bile duct with both acute and chronic cholangitis, and no obstruction is documented. Use it when the record clearly links the calculus to the cholangitis diagnosis.
Clinical signs
Clinical features may include right upper abdominal pain, fever, jaundice, or other signs of biliary infection. Clinical features vary; refer to documentation, and confirm that both acute and chronic cholangitis are documented.
When to use this code
Use this code when the provider documents a bile duct calculus with acute and chronic cholangitis and specifically states there is no obstruction. It fits encounters where imaging, procedure notes, or assessment support choledocholithiasis with cholangitis. If obstruction is mentioned instead, check documentation before coding.
Do not use for
Do not use this code if the stone is in the gallbladder only, or if cholangitis is not documented. Also avoid it when obstruction is documented without the “without obstruction” wording.
Coding tip
Verify the exact site of the calculus and whether obstruction is present before assigning K80.36.