Calculus of bile duct w acute cholangitis with obstruction

This code signifies the presence of gallstones or other calculi within the bile duct system, specifically complicated by an acute inflammation of the bile ducts (cholangitis) and a blockage of the bile flow. This obstruction can lead to significant pain, infection, and potential liver damage if not addressed.

Apply this code when documentation clearly indicates choledocholithiasis or other bile duct calculi, concurrent acute cholangitis, and evidence of biliary obstruction. Supporting documentation would include imaging reports (e.g., ultrasound, MRCP, ERCP) confirming stones and obstruction, along with clinical signs and symptoms of acute cholangitis (e.g., fever, jaundice, elevated liver enzymes, leukocytosis).

• Ensure documentation explicitly states "acute" cholangitis; chronic cholangitis would necessitate a different code.
• Verify the obstruction is due to the calculus in the bile duct, not an external compression or other cause.
• Consider sequencing this code as a primary diagnosis if it is the main reason for the encounter, followed by any associated complications or underlying conditions.