ICD-10 Code K80.4 – Calculus of bile duct with cholecystitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.4 – Calculus of bile duct with cholecystitis
What it is
K80.4 identifies gallstones in the bile duct when cholecystitis is also present. Use it when documentation shows both ductal calculus and inflammation of the gallbladder.
Clinical signs
Typical findings include right upper quadrant pain, fever, nausea, and gallbladder tenderness. Imaging or operative notes may confirm stones in the bile duct with cholecystitis; clinical features vary, refer to documentation.
When to use this code
Use this code when the record clearly states calculus of the bile duct with cholecystitis, whether acute or chronic is specified or implied by the note. It fits inpatient, emergency, and surgical documentation when both conditions are documented together. If the note mentions only gallstones without duct involvement, check documentation before coding.
Do not use for
Do not use it for cholecystitis without bile duct stones, or for bile duct stones without cholecystitis. If the documentation is unclear about the site or the associated inflammation, check documentation.
Coding tip
Code K80.4 only when both the bile duct calculus and cholecystitis are explicitly documented in the same episode.