D32.0

HCC Category Mapping

What This Code Means

A benign (non-cancerous) tumor that grows in the protective membrane surrounding the brain. These tumors are typically slow-growing and may not cause symptoms unless they become large enough to press on brain tissue.

Coding Tips

• •Verify the location is specifically the cerebral meninges (brain covering) rather than spinal meninges, which would use a different code
• •Confirm the neoplasm is benign; if malignant or of uncertain behavior, use the appropriate C-code or D37-D48 range instead

Clinical Significance

Benign neoplasm of the cerebral meninges most commonly represents a meningioma, which is the most frequent primary intracranial tumor, accounting for approximately 30% of all brain tumors. Most meningiomas are slow-growing WHO Grade I tumors that may remain asymptomatic for years, discovered incidentally on imaging. However, they can cause significant neurological symptoms when they compress adjacent brain structures.

Documentation Requirements

• ✓MRI or CT imaging documenting the meningeal-based mass with characteristic features of meningioma.
• ✓Document tumor size, location, mass effect, and whether the patient is symptomatic.
• ✓If surgically resected, pathology must confirm WHO Grade I benign status.
• ✓Include the treatment approach (observation, surgery, radiation) and surveillance interval.

Commonly Confused Codes