Portal hypertension

This code signifies an increase in blood pressure within the portal venous system, which carries blood from the gastrointestinal tract, spleen, and pancreas to the liver. It is typically a consequence of impaired blood flow through the liver, often due to cirrhosis or other liver diseases. The elevated pressure can lead to serious complications such as varices and ascites.

Apply this code when documentation clearly indicates a diagnosis of portal hypertension. This often includes findings such as elevated portal venous pressure measurements, evidence of esophageal or gastric varices, splenomegaly, or ascites directly attributed to portal hypertension. It is frequently seen in patients with chronic liver disease.

• Always code the underlying cause of the portal hypertension, such as cirrhosis (e.g., 571.x), as the primary diagnosis if known and clinically appropriate.
• Look for documentation of specific complications, such as esophageal varices (456.0, 456.1) or ascites (789.5), and code them in addition to portal hypertension.
• Ensure the physician's documentation explicitly states "portal hypertension" or provides sufficient clinical detail to support this diagnosis.