ICD-10 Code K80.65 – Calculus of gallbladder and bile duct with chronic cholecystitis with obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.65 – Calculus of gallbladder and bile duct with chronic cholecystitis with obstruction
What it is
This code identifies gallstones in the gallbladder and bile duct with chronic inflammation of the gallbladder and a blockage. Use it when the record clearly links the stones, chronic cholecystitis, and obstruction.
Clinical signs
Clinical features may include recurrent right upper quadrant pain, nausea, and signs of chronic gallbladder inflammation. Documentation should show obstruction, such as impaired bile flow or a blocked duct; if unclear, check documentation.
When to use this code
Use K80.65 when the provider documents calculus of the gallbladder and bile duct with chronic cholecystitis and obstruction in the same encounter. It also fits when imaging, operative findings, or discharge diagnosis confirm all elements. If the note does not specify obstruction, do not assume it.
Do not use for
Do not use this code for gallstones without chronic cholecystitis, or for acute cholecystitis alone. If the record only says biliary colic, cholelithiasis, or unspecified obstruction, check documentation.
Coding tip
Verify that the documentation names both the chronic cholecystitis and the obstruction before assigning K80.65.