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Our question is how to code the subclavian angiography on the following case: 36225-52-50 or 36216, 36215, and 75716-52? The Radiologist selectively catheterized the RT and LT Common Carotid arteries, the LT External Carotid artery, and the RT and LT Subclavian arteries. From the RT CCA, he did angiography of the cervical and cerebral carotid circulation and we're coding 36223 for that. From the LT CCA, he only did the cervical and we're coding 36222 for that. For the LT ECA, we're coding 36227. From the Subclavian arteries, angiography demonstrates brisk filling of the distal branches with normal arterial runoff. No significant stenosis at the origin of the vertebral artery was noted. This is done as part of a Carotid and Cerebral study, and the origins of the vertebrals are all that was checked for that anatomy. How would you code them?