Question: Notes indicate that the PM physician performed a single autonomic nerve injection for a patient, but I cannot find the correct code for this service. Can you help? Wisconsin Subscriber Answer: You’re going to need some more detail to choose the proper CPT® code — either by querying the provider or finding more information in the encounter notes. Why? CPT® devotes an entire section to autonomic nerve injections, not just a single code. When you get more information, choose from the following codes for the service: