Can you someone clarify? In the guidelines it states 36221-36226 are built on heirarchy and only one code can be used. Then it goes onto say 36225-36226 may be reported for each ipsilateral vertebral territory. So let's say cath is placed in internal carotid (36224) imaging and findings aer provided of common carotid, and internal carotid. Then cath is pulled back and placed in the vertebral. would it then be appropriate to charge for both 36224 and 36226 -59 because the cath is repositioned into the vertebral?