Malignant neoplasm of parietal lobe

This code signifies a primary cancerous tumor originating in the parietal lobe of the brain. This specific location is responsible for processing sensory information, spatial awareness, and navigation.

Apply this code when documentation clearly indicates a primary malignant neoplasm confirmed to be located within the parietal lobe. This diagnosis is typically established through imaging studies (e.g., MRI, CT) and often confirmed by biopsy or surgical pathology.

• Differentiate from secondary (metastatic) brain tumors, which are coded with C79.31.
• Ensure the documentation specifies "parietal lobe" and not just a general brain tumor.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated neurological deficits.