Calculus of gallbladder w chronic cholecyst w obstruction

This code signifies the presence of gallstones within the gallbladder, accompanied by persistent inflammation of the gallbladder (chronic cholecystitis), and a blockage of the bile flow. The obstruction is typically caused by one or more of the gallstones.

Apply this code when documentation clearly indicates both chronic inflammation of the gallbladder and the presence of gallstones causing an obstruction. This is often supported by imaging studies (e.g., ultrasound) confirming cholelithiasis and obstruction, alongside clinical findings consistent with chronic cholecystitis.

• Ensure documentation specifies "chronic" cholecystitis; acute cholecystitis with obstruction would be coded differently.
• Verify that the obstruction is explicitly linked to the calculus; mere presence of gallstones and chronic cholecystitis without obstruction requires a different code.
• Consider additional codes for any associated complications, such as cholangitis or pancreatitis, if documented.