CPT® Code 66020

The procedure described by CPT® Code 66020 involves the injection of air or liquid into the anterior chamber of the eye, which is a specific area located behind the cornea and in front of the iris and lens. This chamber is filled with a clear, watery fluid known as aqueous humor, which plays a crucial role in maintaining intraocular pressure and providing nutrients to the eye. The injection is performed as a separate procedure and requires careful positioning of the patient, typically in a supine position with adequate support for the head and neck. 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 during the procedure, and the injection site is marked for accuracy. A fine needle attached to a syringe is carefully inserted through the cornea into the anterior chamber, allowing for the precise delivery of air or liquid into the fluid-filled cavity. Following the injection, the needle is withdrawn, and antibiotic eye drops may be instilled to prevent infection, after which the eye may be patched to protect it during the initial recovery phase. This procedure is distinct from CPT® Code 66030, which involves the injection of medication into the anterior chamber using a similar technique, referred to as an intracameral injection.