ICD-10 Code K80.21 – Calculus of gallbladder without cholecystitis with obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K80.21 – Calculus of gallbladder without cholecystitis with obstruction
What it is
K80.21 identifies a gallstone in the gallbladder that is blocking flow, without signs of gallbladder inflammation. Use it when the documentation clearly states obstruction and no cholecystitis.
Clinical signs
Typical findings include biliary colic, right upper quadrant pain, nausea, or pain after meals. Clinical features vary; refer to documentation, especially for imaging or provider statements confirming obstruction.
When to use this code
Use this code when the record documents a gallbladder stone with obstruction and explicitly excludes cholecystitis. It fits encounters where imaging or the clinician notes a calculus causing blockage, but inflammation is not diagnosed. If the chart is unclear, check documentation.
Do not use for
Do not use K80.21 if cholecystitis is present, because a different gallstone code applies. Also avoid it when the note does not confirm obstruction or when the stone is in the bile duct rather than the gallbladder.
Coding tip
Confirm both elements in the note: gallbladder calculus and obstruction, with no cholecystitis stated.