Secondary malig neoplasm of liver and intrahepatic bile duct

This code signifies the presence of metastatic cancer that has spread to the liver or bile ducts within the liver from a primary tumor located elsewhere in the body. It indicates that the liver or intrahepatic bile ducts are a secondary site of malignancy, not the origin of the cancer.

Use this code when documentation clearly states metastatic carcinoma to the liver or intrahepatic bile duct. This diagnosis is supported by pathology reports confirming secondary malignancy, imaging studies showing liver metastases, or physician notes explicitly stating "metastatic liver cancer" or "secondary neoplasm of liver."

• Always code the primary malignancy first, if known and still active, followed by this code.
• Distinguish carefully between primary liver cancer (e.g., hepatocellular carcinoma) and metastatic disease to the liver.
• Ensure documentation specifies "secondary" or "metastatic" to the liver; otherwise, a primary liver neoplasm code may be more appropriate.