Question - As CPT codes are used for indicating procedures, they also indicate supplies. How has, since the production of CPT by the AMA in the 60's CPT codes and HCPCS codes evolved? What additions, especially those HCPCS codes do we currently or recently use and implement that did not exist decades ago? What is an example of a CPT procedural code versus a HCPCS?
What is the meaning of the modifier P3 when it appears with an anesthesia CPT code?"