Malignant neoplasm of other specified sites of nervous system

This code signifies a cancerous growth originating in a specific, but less common, location within the central or peripheral nervous system that is not otherwise classified. This includes malignant neoplasms of cranial nerves, spinal nerves, sympathetic or parasympathetic nervous system, or other specified parts of the nervous system.

Apply this code when documentation clearly identifies a primary malignant neoplasm in a nervous system site other than the brain, spinal cord, meninges, or cauda equina. Examples include tumors of the vagus nerve, optic nerve (if primary), or specific peripheral nerve sheaths. The physician's diagnostic statement must specify the exact nervous system site.

• Ensure the documentation specifies "malignant" and the exact nervous system site.
• Differentiate from benign neoplasms of the nervous system (e.g., schwannoma, neurofibroma).
• Do not use for metastatic lesions to the nervous system; use secondary malignancy codes for those cases.