Clarification on liver tumor embolization

Hello everyone. I have a couple of questions that I have confused my self on regarding liver tumor embolization. The radiologist selectively cathed the splenic artery, common hepatic artery, and the right hepatic artery distal to the cystic artery. He then performed the chemoembolic infusion to the tumor. At the end of procedure he performed an arteriogram on the right common femoral arteriotomy site before sealing it. I have read the CPT guidelines and several industry articles. Is it right to code the following and do I need to add anything?

37243 - embolization

36246 - splenic arterty

36248 x 2

96420 for the chemoembolization

Thanks for any help!

Sherry Morgan, ARRT(R), CPC

Clarification on liver tumor embolization