Other specified carcinomas of liver

This code represents a malignant neoplasm of the liver that is not hepatocellular carcinoma, cholangiocarcinoma, or an unspecified type. It encompasses rare or less common primary liver cancers that have been histologically identified but do not fit into the more common categories.

This code is appropriate when documentation specifies a primary liver malignancy that is neither hepatocellular carcinoma nor cholangiocarcinoma, and the specific type is identified (e.g., fibrolamellar carcinoma, hepatoblastoma in adults, angiosarcoma of the liver). Use this code when a definitive diagnosis of a specified, but uncommon, liver carcinoma is documented by pathology.

• Do not use this code for metastatic liver cancer; use codes from the C78.7 category for secondary malignancies.
• Ensure the pathology report clearly identifies the specific type of carcinoma to support "other specified."
• If the type of liver carcinoma is not specified, or if it's described as "primary liver cancer NOS," use C22.9 (Malignant neoplasm of liver, unspecified).