I am working with a pain management client and encountered a scenario where the SCS system failed. The provider replaced the IPG, which we coded with 63685 (implantation/replacement). The prior leads were removed, and new leads were placed at a new location in the epidural space using a new Tuohy needle. Since the new leads were implanted at a different location, can we bill 63650 (implantation of neurostimulator electrode array) instead of 63663 (revision of spinal neurostimulator electrode)?