CPT® Code 64772

Transection or avulsion of other spinal nerve, extradural, refers to a surgical procedure that involves the severing or removal of a portion of a spinal nerve. This intervention is primarily performed to alleviate chronic pain that may not respond to other treatments. The procedure specifically targets spinal nerves that are not covered by more specific CPT® codes, indicating its use in cases where a distinct coding option is unavailable. The term 'extradural' signifies that the procedure is conducted outside the dural membrane, which is the protective layer surrounding the brain and spinal cord. During the operation, a skin incision is made, and the surrounding soft tissues are carefully dissected to gain access to the affected spinal nerve. Once the nerve is isolated, the surgeon can perform the transection by grasping the nerve and dividing it. In some cases, the nerve may be avulsed by twisting it over a hemostat, or it may be stretched, ligated, and divided in a specific sequence, first distally and then proximally. Following the transection, the proximal end of the nerve retracts into deeper tissues, and the soft tissues are subsequently closed in layers to ensure proper healing. This procedure is distinct from the transection or avulsion of cranial nerves, which is coded separately under CPT® Code 64771.