ICD-10 Code K80.13 – Calculus of gallbladder with acute and chronic cholecystitis with obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.13 – Calculus of gallbladder with acute and chronic cholecystitis with obstruction
What it is
This code identifies gallstones in the gallbladder with both acute and chronic inflammation, plus obstruction. Use it when documentation shows calculus-related cholecystitis affecting the gallbladder and blocking flow.
Clinical signs
Typical findings include right upper quadrant pain, gallbladder tenderness, nausea, and imaging evidence of gallstones with cholecystitis. Clinical features vary; refer to documentation.
When to use this code
Use K80.13 when the record clearly states gallbladder calculus with acute and chronic cholecystitis and obstruction. The diagnosis should come from the provider’s final assessment or supported imaging and operative findings. If obstruction is not documented, check documentation before assigning this code.
Do not use for
Do not use this code for gallstones without cholecystitis, or for cholecystitis without documented obstruction. If the note only says “biliary colic” or “suspected gallstones,” check documentation.
Coding tip
Match all three elements—calculus, acute and chronic cholecystitis, and obstruction—before coding K80.13.