Malignant neoplasm of bones of skull and face

This code identifies a primary cancerous tumor originating in the bony structures of the skull or face. This includes malignancies affecting the cranial bones, facial bones, and orbital bones, excluding soft tissue tumors.

Use this code when documentation confirms a primary malignant neoplasm of the skull or facial bones. This diagnosis is typically established through biopsy and imaging studies (e.g., CT, MRI) showing bone involvement.

• Differentiate between primary bone cancer and metastatic disease to the skull/face; this code is for primary bone cancer only.
• Carefully review documentation to exclude malignant neoplasms of the maxillary sinus (C31.0), upper jaw (C03.0), or lower jaw bone (C41.1), as these are coded elsewhere.
• Ensure the pathology report confirms the malignancy and its origin within the bone.