CPT® Code 0253T

Insertion of anterior segment aqueous drainage device, without extraocular reservoir, internal approach, into the suprachoroidal space

The procedure described by CPT® Code 0253T involves the insertion of an anterior segment aqueous drainage device, specifically designed for the management of chronic or progressive open-angle glaucoma. This type of glaucoma is characterized by an increase in intraocular pressure due to inadequate drainage of aqueous humor, which can lead to optic nerve damage and vision loss. The drainage device is inserted through a minimally invasive technique that does not require an extraocular reservoir, making it a more streamlined option for patients. The procedure begins with a small, self-sealing incision made in the cornea, allowing access to the anterior chamber of the eye. Following this, a deep posterior scleral flap is created to access the suprachoroidal space, which is the area between the sclera and the choroid. A gonioscope, a specialized magnification lens, is utilized to accurately place and position the drainage device at the angle of the anterior chamber. The device is designed to traverse the sclera, with its terminal end positioned within the suprachoroidal space, facilitating the drainage of excess aqueous humor and thereby helping to lower intraocular pressure. This procedure is particularly beneficial for patients who have not responded adequately to other forms of glaucoma treatment.