Malignant neoplasm of pineal gland

This code signifies the presence of a cancerous tumor originating in the pineal gland, a small endocrine gland located deep within the brain. These neoplasms are typically aggressive and can lead to various neurological and endocrine symptoms due to their location and potential for hormone disruption.

Assign this code when documentation clearly indicates a primary malignant neoplasm of the pineal gland, confirmed by pathology or strong clinical and imaging evidence. This code is appropriate for initial diagnosis, treatment, and follow-up care for this specific type of brain tumor.

• Always verify the malignancy and primary site; distinguish from benign pineal tumors or metastatic disease to the pineal gland.
• Ensure documentation specifies "pineal gland" and not a more general brain tumor site, if possible.
• Consider sequencing with codes for associated neurological symptoms (e.g., hydrocephalus) or endocrine dysfunction.