CPT® Code 66165

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The procedure described by CPT® Code 66165 involves the surgical creation of a new drainage pathway for ocular fluids through the sclera, which is the white outer coating of the eyeball. This intervention is specifically aimed at managing glaucoma, a condition characterized by increased intraocular pressure due to inadequate drainage of aqueous humor, the fluid produced in the eye. In this procedure, the physician performs a fistulization of the sclera, which entails making an opening that allows for the outflow of excess fluid, thereby reducing pressure within the eye. The technique may involve iridencleisis or iridotasis, which are methods that utilize a portion of the iris to facilitate the drainage process. By drawing fluid from one side of the eye to the other, the procedure aims to restore normal fluid dynamics and alleviate the symptoms associated with glaucoma, ultimately preserving vision and preventing further ocular damage.