I have a question regarding the modifier 78. We had a patient that had to returned to the OR unplanned. I know the 78 modifier states that the global period does not start over. This occurred towards the end of the patients global period. The patient came into the office (now out of the global period) and we billed an OV. Insurance is denying stating the patient is still in global due to the 2nd surgery and that the 78 modifier just shows that it was unplanned return. Any guidance would be helpful.