ICD-10 Code K80.33 – Calculus of bile duct with acute cholangitis with obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.33 – Calculus of bile duct with acute cholangitis with obstruction
What it is
K80.33 identifies a bile duct stone causing acute cholangitis and obstruction. Use it when documentation shows a calculus in the biliary duct with infection/inflammation and blocked bile flow.
Clinical signs
Typical findings include right upper abdominal pain, fever, and jaundice, though clinical features vary; refer to documentation. Imaging or procedural notes may confirm ductal obstruction and a biliary stone.
When to use this code
Use this code when the record clearly links a bile duct calculus to acute cholangitis and obstruction. It fits encounters where the clinician documents choledocholithiasis with infected, obstructed bile ducts. If the note does not specify obstruction or acute cholangitis, check documentation before coding.
Do not use for
Do not use K80.33 for gallbladder stones without duct involvement, or for biliary obstruction without acute cholangitis. Check documentation if the record only says suspected stone or nonspecific cholangitis.
Coding tip
Code only when all three elements are documented: bile duct stone, acute cholangitis, and obstruction.