ICD-10 Code K80.64 – Calculus of gallbladder and bile duct with chronic cholecystitis without obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.64 – Calculus of gallbladder and bile duct with chronic cholecystitis without obstruction
What it is
This code identifies gallstones in the gallbladder and bile duct, along with chronic inflammation of the gallbladder, without evidence of obstruction. Use it when the record clearly documents both the stones and chronic cholecystitis.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include recurrent right upper quadrant pain, biliary colic, and imaging evidence of gallstones with chronic gallbladder inflammation.
When to use this code
Use K80.64 when the provider documents calculi in both the gallbladder and bile duct plus chronic cholecystitis, and specifically states there is no obstruction. It fits confirmed imaging, operative, or pathology reports. If obstruction is present or not documented, check documentation before assigning this code.
Do not use for
Do not use this code for gallstones without chronic cholecystitis, or when obstruction of the bile duct is documented. If the record only says “cholelithiasis” or “cholecystitis” without the full combination, this code is not appropriate.
Coding tip
Confirm both the stone location and the absence of obstruction in the provider’s final documentation before coding.