All anesthesia services are reported with Current Procedural Terminology (CPT) containing five-digit anesthesia procedure code from 00100 through 01999 and the addition of a physical status modifier. The addition of physical status modifier indicates that the service or procedure has been changed by some specific circumstance, but has not been altered in definition or code.
Moreover, modifier 47 indicates variety of levels of anesthesia, ranging from local through general anesthesia and it is often use by the insurance company on how much they are going to reimburse.