Budd-Chiari syndrome

This code represents Budd-Chiari syndrome, a rare condition characterized by obstruction of hepatic venous outflow, leading to liver congestion and damage. The obstruction can occur at any level from the small hepatic venules to the junction of the inferior vena cava and the right atrium.

Use this code when documentation clearly indicates a diagnosis of Budd-Chiari syndrome. This diagnosis is typically supported by imaging studies (e.g., Doppler ultrasound, CT, MRI) showing hepatic vein or inferior vena cava obstruction, along with clinical signs of liver dysfunction such as ascites, hepatomegaly, and abdominal pain.

• Differentiate from other causes of portal hypertension or liver disease; ensure the documentation specifically identifies hepatic venous outflow obstruction.
• Look for underlying causes or associated conditions, such as myeloproliferative disorders or hypercoagulable states, and code them additionally if documented.
• Be mindful of laterality if specified, though Budd-Chiari syndrome typically affects multiple hepatic veins or the IVC.