Ask Dr. Z

1. First question: The physician refers to a 'follow-up' of intracranial cerebral without advancing catheter into additional selective but increasing rate of imaging to better capture AVF draining into a venous varix. The physician contends this is a separate charge.  However, I say that is NOT CORRECT. Please help. 

2. Second question: The physician performs selective external carotid angiogram followed by advancement of catheter from trunk of LECA to position just proximal to left internal maxillary artery and superficial temporal artery with additional imaging. Since these are not INTRACRANIAL CIRCULATION BRANCH arteries I am hesitant to add code 36228 to the bill. Thanks.