CPT® Code 0699T

The procedure described by CPT® Code 0699T involves the injection of medication into the posterior chamber of the eye. The posterior chamber is a critical anatomical space located between the iris and the lens, situated in front of the vitreous body. This chamber plays a vital role in the eye's physiology, particularly in the production and circulation of aqueous humor, which is a clear, watery fluid essential for maintaining intraocular pressure, providing nutrients to the cornea and lens, and facilitating the removal of metabolic waste from these structures. During the injection procedure, the patient is typically positioned in a supine manner, ensuring that the head and neck are adequately supported for optimal access to the eye. Prior to the injection, a topical ophthalmic anesthetic is applied to minimize discomfort, and the eye is cleansed with an antiseptic solution to reduce the risk of infection. An eyelid speculum is then utilized to keep the eyelids open, allowing for a clear view of the injection site, which is marked for precision. A fine needle attached to a syringe is carefully inserted through the cornea, traversing the anterior chamber and directed behind the iris towards the lens, where the medication is administered into the posterior chamber. Following the injection, the needle is withdrawn, and antibiotic eye drops are instilled to prevent infection, after which the eye may be patched to protect it during the initial recovery phase.