Hi,
I think that overall there probably is a high use of the (-59) modifier. When there has been a question as to when to unbundle procedures, I've gone right to my physician(s). Ask him if there is justified reason for unbundling the two procedures - show him the description of the (-59) modifier out of the cpt book and give him your scenario. I've worked with physicians who, after reviewing a coding scenario and the use of various "unbundling" modifiers (-25, -57, -59) have stated that it would not be appropriate to bill w/ them. Would this work in your situation?