Calculus of GB w acute and chronic cholecyst w obstruction

This code signifies the presence of gallstones within the gallbladder, concurrently causing both acute and chronic inflammation of the gallbladder (cholecystitis), and leading to an obstruction of the bile flow. This obstruction is typically due to a gallstone lodged in the cystic duct or common bile duct. Patients often present with severe right upper quadrant pain, fever, and jaundice.

Apply this code when documentation clearly indicates cholelithiasis with evidence of both acute and chronic cholecystitis, and an associated obstruction. This is often supported by imaging studies (e.g., ultrasound, CT scan) showing gallstones, gallbladder wall thickening, pericholecystic fluid, and ductal dilation, alongside clinical signs and symptoms of inflammation and obstruction.

• Ensure documentation specifies both acute and chronic cholecystitis, not just one or the other.
• Verify the presence of an obstruction; if no obstruction is documented, a different K80.1 subcategory would be more appropriate.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, especially for surgical interventions like cholecystectomy.