If there is a modifier that must be used with this CPT code 100% of the time, then enter the modifier for the procedure here. This means that this modifier is accepted by all insurance companies. If you must use different modifiers for different insurance companies, or if you sometimes need a modifier for this product or service and at other times do not, then do not enter the modifier here. When a modifier is used only for specific insurance carriers, enter the appropriate specific modifier in the Intelli$ense Fee Schedule for each insurance carrier. Refer back to the Insurance Carrier catalog for detailed information on how to enter the modifier in Intelli$ense Fee Schedule.