CPT® Code 66185

The procedure described by CPT® Code 66185 involves the revision of an aqueous shunt that is connected to an extraocular equatorial plate reservoir, accompanied by the use of a graft. This surgical intervention is typically indicated for patients experiencing complications related to their aqueous shunt, which is a device used to manage intraocular pressure (IOP) in conditions such as glaucoma. The revision may be necessary due to various issues, including the formation of scar tissue at the posterior plate, which can obstruct proper drainage and lead to increased IOP. Other potential complications that may necessitate this procedure include corneal damage, the development of small cataracts, infections, and bleeding. During the revision, an incision is made in the conjunctival tissue to access the shunt, allowing for the removal of any obstructive scar tissue. Following this, a graft, which may be a scleral or corneal patch from donor tissue, is placed over the plate to secure it in position and minimize the risk of conjunctival ulceration. The procedure may also involve the application of Mitomycin C, a cytotoxic drug, to prevent the recurrence of scarring. Post-operative care includes the application of a contact lens bandage and the instillation of antibiotic and/or steroid eye drops to promote healing and prevent infection.