CPT® Code 64837

Add-On Code

The CPT® Code 64837 refers to the suture of each additional nerve in the hand or foot, which is performed in conjunction with a primary nerve repair procedure. This code is specifically utilized when multiple nerves require suturing, allowing for the accurate billing of each additional nerve that is repaired beyond the primary procedure. The common language description highlights that a single common sensory nerve can be sutured under the primary code 64834. The suture repair of a nerve, often termed end-to-end closure, can be executed using various techniques depending on the location and nature of the nerve injury. For injuries located more distally, an epineural closure technique is typically employed, where the two ends of the transected nerve are exposed, and sutures are placed in the epineurium to approximate the nerve ends without creating tension. Conversely, for more proximal injuries, a perineural closure technique may be utilized, which involves exposing the individual fascicles of axons after retracting the epineurium. This method allows for the identification and alignment of fascicles that serve similar functions, which are then sutured together. The closure process is methodical, starting with the deeper fascicles and progressing toward the surface, ensuring that all nerve structures are adequately repaired. The use of code 64837 is essential for accurately documenting and billing for the repair of each additional nerve in these complex surgical scenarios.