Hi, we are looking to start this procedure for patients pre-total knee replacement. The company is telling us to bill 64640, "Destruction by neurolytic agent; other peripheral nerve or branch" and U/S guidance based upon an AMA opinion from 2013. In 2017 Category III code 0441T was added and the descriptor is :"Ablation, percutaneous, cryoablation, includes imaging guidance; lower extremity distal/peripheral nerve". Not sure which coding advice to use and any assistance is greatly appreciated.