Answer: A PVB targets the sympathetic chain of nerves and somatic nerves (intercostal and spinal nerves and their branches), which may be utilized for dermatomal coverage from T2 (thoracic level 2) to L1 (lumbar level 1). In contrast, the erector spinae is a group of muscles and tendons extending the length, and on both sides, of the spine. It is not a separately identified spinal nerve or branch. Therefore, code 64999, Unlisted procedure, nervous system, would be the most appropriate code to report for this type of procedure, as stated in the January 2018 issue of the CPT® Assistant., In contrast, the erector spinae is a group of muscles and tendons extending the length, and on both sides, of the spine. It is not a separately identified spinal nerve or branch. Therefore, code 64999, Unlisted procedure, nervous system, would be the most appropriate code to report for this type of procedure, as stated in the January 2018 issue , Erector Spinae Plane Block [QUOTE="ramoscenter , post: 515059, member: 215143"] I have a question. Can you bill 64461 for Erector Spinae Nerve Block instead of 64999..