CPT® Code 66990

Add-On Code

The CPT® Code 66990 refers to the use of an ophthalmic endoscope, which is a specialized instrument designed to enhance the visualization of the eye's internal structures, particularly the anterior chamber, lens, and posterior segment. This tool offers superior clarity compared to traditional operating microscopes, making it particularly beneficial for specific surgical procedures. The process begins with the creation of two small incisions, known as stab incisions, in the limbus, which is the border between the cornea and the sclera. Through one of these incisions, a cannula is introduced, allowing for the injection of viscoelastic material. This material serves to improve the visibility of the surgical area by creating space and maintaining the shape of the eye during the procedure. Following this, the ophthalmic endoscope is inserted through the second stab incision, enabling the surgeon to conduct a thorough examination of the surgical site. The insights gained from this endoscopic evaluation are crucial for determining the most effective surgical approach tailored to the patient's needs. Subsequently, the physician can proceed with the corrective procedure, utilizing the enhanced visualization provided by the endoscope as necessary throughout the operation.