ICD-10 Code K80.0 – Calculus of gallbladder with acute cholecystitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.0 – Calculus of gallbladder with acute cholecystitis
What it is
This code identifies gallstones in the gallbladder when the patient also has acute inflammation of the gallbladder. Use it when documentation clearly links cholelithiasis with acute cholecystitis.
Clinical signs
Typical findings include right upper quadrant abdominal pain, tenderness, nausea, vomiting, and signs consistent with acute gallbladder inflammation. Clinical features vary; refer to documentation.
When to use this code
Use K80.0 when the record states acute cholecystitis due to gallstones, or when both conditions are documented together as related. It also applies when imaging or operative notes support gallbladder calculi with acute inflammation. If the provider does not specify the relationship, check documentation.
Do not use for
Do not use this code for gallstones without acute cholecystitis, chronic cholecystitis, or unspecified gallbladder disease. Check documentation if the inflammation is not clearly acute.
Coding tip
Confirm that the provider connects the gallstone finding to acute cholecystitis before assigning K80.0.