ICD-10 Code K80.12 – Calculus of gallbladder with acute and chronic cholecystitis without obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.12 – Calculus of gallbladder with acute and chronic cholecystitis without obstruction
What it is
K80.12 identifies gallstones in the gallbladder with both acute and chronic cholecystitis, and no obstruction is documented. Use it when the record shows inflammation of the gallbladder related to calculi, but not blockage of the biliary tract.
Clinical signs
Clinical features usually include right upper quadrant pain, tenderness, nausea, or fever, with findings consistent with gallbladder inflammation. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents gallstones plus acute and chronic cholecystitis in the same encounter. The chart should also state that there is no obstruction; if obstruction is documented, you need a different code.
It is appropriate for confirmed gallbladder calculus with mixed acute and chronic inflammatory changes, whether diagnosed clinically, by imaging, or at surgery. Check documentation if the record does not clearly specify both the acute and chronic components.
Do not use for
Do not use K80.12 if the chart documents biliary obstruction, choledocholithiasis, or cholecystitis without gallstones. If the gallstone status or obstruction status is unclear, check documentation.
Coding tip
Match all three elements exactly: gallbladder calculus, acute and chronic cholecystitis, and no obstruction.