Intrahepatic bile duct carcinoma

This code represents a primary malignant tumor originating within the bile ducts located inside the liver. It is a type of cholangiocarcinoma that specifically affects the intrahepatic biliary tree.

Assign this code when documentation specifies a primary malignant neoplasm of the intrahepatic bile ducts. This diagnosis is typically confirmed through imaging, biopsy, and pathology reports.

• Do not use this code for tumors of the extrahepatic bile ducts or ampulla of Vater.
• Distinguish carefully from hepatocellular carcinoma, which originates from hepatocytes.
• Ensure documentation clearly states "intrahepatic" to differentiate from C24.0 (malignant neoplasm of extrahepatic bile duct).