ICD-10 Code K80.44 – Calculus of bile duct with chronic cholecystitis without obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.44 – Calculus of bile duct with chronic cholecystitis without obstruction
What it is
This code identifies a gallstone in the bile duct along with chronic inflammation of the gallbladder, without evidence that the duct is blocked. Use it when both conditions are documented together.
Clinical signs
Clinical features may include recurrent right upper abdominal pain, biliary colic, or a history of chronic gallbladder inflammation. Imaging or operative findings may show ductal calculus; clinical features vary; refer to documentation.
When to use this code
Use K80.44 when the record clearly documents calculus of the bile duct and chronic cholecystitis, and states there is no obstruction. It may appear in imaging reports, surgical notes, or discharge summaries. If obstruction is present or not specified, check documentation before coding.
Do not use for
Do not use this code for isolated cholelithiasis, acute cholecystitis, or bile duct stones with obstruction. If the note does not confirm chronic cholecystitis, check documentation.
Coding tip
Match both the duct stone and chronic cholecystitis in the same source document, and verify that “without obstruction” is explicitly stated.