Recently a billing office for a Neurology Practice asked about the use of Modifier 52 specifically as it relates to billing code 95974 (Electronic Analysis of Implanted Neurostimulator, First Hour.) This is a time based code for the first hour of testing. Does Modifier 52 have to be appended if the dosing time falls short of 30 minutes even though the procedure was completed in its entirety? Your response is greatly appreciated.