What do you think is the correct order to list procedure codes for spine procedures? Currently I am listing the main procedure followed by the add-on code directly underneath, and listing the highest price main procedure first followed by the add-on codes, and then the next highest priced procedure followed by the add-on codes. In any other surgery claim I list the highest price procedure first and then enter the next ones in descending cost order. But, this is hard to do with multiple level spine surgeries, and I am wondering what others are doing?