our physician performed a trabectomy, and is only billing for the surgery while another physician outside of our facility is doing the postop care. Our physician billed with the 54 modifier while the other physician is using the 55 for post op care only. The patient had to have a laser suture lysis done by our physician because the postop doctor couldn't do it. How do we bill for this done in the post op by our physician when another is in charge of the post op? Do we just use a 99024 since the laser lysis is considered part of the global? Or do we need to charge for it with a modifier?