Echinococcus granulosus infection of liver

This code signifies a parasitic infection of the liver caused by the larval stage of the tapeworm Echinococcus granulosus, commonly known as cystic echinococcosis or hydatid disease. The infection typically results in the formation of one or more fluid-filled cysts within the hepatic parenchyma.

Apply this code when documentation confirms a diagnosis of hepatic hydatid disease due to Echinococcus granulosus. This diagnosis is often supported by imaging studies (e.g., ultrasound, CT, MRI) showing characteristic liver cysts, serological tests, and/or histopathological confirmation from biopsy or surgical resection.

• Ensure the documentation specifies the liver as the affected organ; other organ involvement would require a different code.
• Distinguish from alveolar echinococcosis (caused by Echinococcus multilocularis), which has a distinct code.
• Look for documentation of the causative organism Echinococcus granulosus to differentiate from other types of liver cysts.