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Our IR dept reported 36223-50 and 36225, and insurance denied based on incorrect modifier. Should an add-on CPT code be reported? 

Left PCA aneurysm, SP coil embolization.

"Fluoro identified right femoral head introduced a 5 x 10 sheath into the right femoral artery using US, micropuncture and Seldinger technique. Angiography demonstrated adequate placement. Then introduced a 5-French catheter over an 0.035 Glidewire. Patient had very tortuous origins of her great vessels. I selectively catheterized the right brachiocephalic artery after attempting to catheterize the right common carotid artery. I evaluated the brachiocephalic artery for visualization of the vertebral artery and carotid artery. I then selectively catheterized the left common carotid artery and left subclavian artery to image the left vertebral artery. Each vessel was evaluated using multiple projections including the angiogram. I removed the catheter and sealed the arteriotomy."