CPT® Code 66160

The procedure described by CPT® Code 66160 involves the surgical technique known as fistulization of the sclera, specifically aimed at treating glaucoma. This procedure is characterized by a sclerectomy, which is the surgical removal of a portion of the sclera, the white outer coating of the eyeball, combined with an iridectomy, the surgical removal of a part of the iris. The primary goal of this intervention is to facilitate the drainage of aqueous humor from the eye, thereby reducing intraocular pressure, which is crucial in managing glaucoma. During the procedure, the eye is examined under an operating microscope to ensure precision. An incision is made in the conjunctiva, the thin membrane covering the eye, to access the sclera. The surgeon then carefully incises the sclera near the limbus, the border between the cornea and sclera, and excises a scleral lip using either a punch or scissors. Following this, the iris is manipulated with forceps to create a smooth, inverted flap, which is essential for the iridectomy. This flap allows for improved drainage of fluid from the posterior chamber of the eye, contributing to the reduction of intraocular pressure. Finally, the scleral incision is meticulously closed with sutures, and the conjunctiva is also closed to complete the procedure, ensuring the integrity of the eye structure is maintained.