Abscess of liver

This code signifies a localized collection of pus within the liver parenchyma, typically resulting from bacterial infection. It represents an inflammatory response to invading microorganisms, leading to tissue necrosis and the formation of a purulent cavity.

Assign this code when documentation clearly indicates a diagnosis of a liver abscess. Supporting clinical evidence often includes imaging studies (e.g., ultrasound, CT scan) demonstrating an intrahepatic fluid collection with features consistent with an abscess, along with clinical signs of infection such as fever, right upper quadrant pain, and elevated inflammatory markers.

• Differentiate from hepatic cysts or tumors; imaging reports should explicitly state "abscess."
• If the abscess is amebic, a more specific code from the 006.3 category (Amebic liver abscess) should be used.
• Consider sequencing if the abscess is secondary to another condition, such as cholangitis or diverticulitis, following ICD-9-CM guidelines for multiple diagnoses.