CPT® Code 61782

Stereotactic computer-assisted (navigational) procedure; cranial, extradural (List separately in addition to code for primary procedure)

Stereotactic procedures are advanced surgical techniques that utilize a defined three-dimensional coordinate system, facilitated by computer technology, to enhance the precision of interventions performed on the brain. The primary advantage of these procedures is the ability to conduct them with minimal invasiveness, often without the need for general anesthesia. This is achieved through the use of smaller skin incisions and reduced bone openings, which significantly lowers the risk associated with traditional surgical methods. During the procedure, a local anesthetic is administered to the planned pin sites on the skull to ensure patient comfort. A stereotactic ring is then carefully positioned over the skull, and pins are inserted through the skin into the skull to stabilize the patient's head, preventing any movement during the procedure. Following this, a second localizing ring is temporarily affixed to the stereotactic ring, and a CT scan is performed to gather critical imaging data. The information from the CT scan is processed using specialized navigational computer software, which generates precise coordinates that guide the surgeon to the optimal location for making skin incisions and bone cuts. This meticulous approach allows for accurate targeting of lesions or specific regions of the brain, thereby enhancing the effectiveness of the definitive procedure that follows. It is important to note that CPT® Code 61782 specifically refers to procedures performed outside the dura mater (extradural), while CPT® Code 61781 is designated for those conducted within or beneath the dura mater (intradural).