CPT® Code 66700

The ciliary body is an essential structure located just behind the iris of the eye. It plays a crucial role in two primary functions: the production of aqueous humor, which is the clear fluid filling the anterior chamber of the eye, and accommodation, which is the process that allows the crystalline lens to change shape for focusing on objects at varying distances. The procedure described by CPT® Code 66700 involves the destruction of the ciliary body, a surgical intervention typically indicated for patients with glaucoma that has not responded adequately to medication or other less invasive surgical treatments. By destroying the ciliary body, the procedure aims to reduce the inflow of aqueous humor into the anterior chamber, thereby lowering intraocular pressure, which is a critical factor in managing glaucoma. The procedure is performed under local anesthesia, with a lid speculum used to keep the eyelids open during the operation. Diathermy, also known as electrodiathermy, is employed to carry out the destruction, utilizing either an extra-ocular transcleral or transconjunctival approach. In some cases, a scleral flap may be elevated to provide direct access to the ciliary body, where a heat probe is then used to perform the destruction.