CPT® Code 0177T

Deleted

The procedure described by CPT® Code 0177T involves the transluminal dilation of the aqueous outflow canal, specifically Schlemm's canal, with the retention of a device or stent. This intervention is primarily indicated for the treatment of open-angle glaucoma, a condition characterized by increased intraocular pressure (IOP) that can lead to optic nerve damage and vision loss. The procedure is also known as glaucoma canaloplasty or enhanced viscocanalostomy. During the procedure, the surgeon creates a scleral flap to access the canal, which is then deroofed to facilitate the dilation process. A flexible microcatheter or cannula is introduced into the canal, allowing for the instillation of a viscoelastic substance, such as high viscosity sodium hyaluronate, to aid in the dilation and ensure smooth advancement of the cannula. The key distinction of CPT® Code 0177T is the retention of a stent or suture within the canal, which serves to maintain the newly created opening and enhance fluid drainage from the eye. This retention mechanism is crucial for effectively managing IOP and improving patient outcomes in those suffering from glaucoma.