CPT® Code 61790

Creation of lesion by stereotactic method, percutaneous, by neurolytic agent (eg, alcohol, thermal, electrical, radiofrequency); gasserian ganglion

The CPT® Code 61790 refers to the creation of a lesion in the gasserian ganglion using a stereotactic method. This procedure involves the precise placement of a neurolytic agent, which may include substances such as alcohol, or the application of thermal, electrical, or radiofrequency energy to destroy targeted nerve tissue. The gasserian ganglion, also known as the trigeminal ganglion, is a critical structure involved in the transmission of sensory information from the face to the brain. The procedure is typically performed under imaging guidance, such as MRI or CT scans, which help in accurately mapping the location of the lesion to be created. A specialized frame is affixed to the patient's skull to ensure stability and precision during the procedure. The use of stereotactic coordinates allows for the accurate advancement of a needle or probe to the predetermined site, where the lesion is created. This technique is essential for treating conditions related to the trigeminal nerve, particularly in cases of severe facial pain or other neuropathic conditions. The procedure may also be performed using frameless stereotactic techniques that utilize fiduciary markers for guidance, enhancing the accuracy of the intervention.