ICD-10 Code K80.43 – Calculus of bile duct with acute cholecystitis with obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.43 – Calculus of bile duct with acute cholecystitis with obstruction
What it is
This code identifies gallstones in the bile duct with acute inflammation of the gallbladder and blockage of bile flow. Use it when documentation confirms both the duct stone and acute cholecystitis with obstruction.
Clinical signs
Typical findings include right upper abdominal pain, tenderness, nausea, vomiting, and signs of biliary obstruction. Clinical features vary; refer to documentation, especially imaging or operative findings confirming ductal stone and acute cholecystitis.
When to use this code
Use K80.43 when the record clearly states calculus of the bile duct with acute cholecystitis and obstruction. It is appropriate when imaging, surgery, or provider assessment documents both the gallstone location and the obstructive acute inflammatory process.
If the note only mentions gallstones, cholecystitis, or obstruction separately, do not assume this combined code. You should code only what the provider documents and confirm whether the stone is in the bile duct rather than the gallbladder.
Do not use for
Do not use this code for uncomplicated gallstones, chronic cholecystitis, or gallbladder stones without duct involvement. Check documentation if obstruction or acute cholecystitis is not clearly stated.
Coding tip
Verify that the record supports all three elements: bile duct calculus, acute cholecystitis, and obstruction.