The correct answer is CPT code 66711.
The CPT or Current Procedural Terminology code arrangement refers to a medical code set sustained by the AMA via the CPT editorial panel. Glaucoma refers to an array of disorders, which destruct the optic nerve of the eye and can lead to blindness and vision loss.
Trabeculectomy refers to the surgery that comprises incision and repair of the iris and the ciliary body. The CPT code 66711 is reported, under destruction methods on the Iris, Ciliary body of the eye.