Can a dentist simply choose to bill a CPT medical code for a "panoramic xray" versus the CDT (dental) code? Are there any rules that prohibit a dentist from billing medical code instead? The CDT (dental) code is 0330 and the medical CPT code is 70350 "panoramic x-ray of jaws." The medical CPT code pays significantly more (3 X) what the dental code pays. This would be for a regular dentist in a regular dental office and not part of any oral surgery procedure as in an outpatient medical/dental clinic or hospital. If this is the case, why wouldn't all dentists bill their insurance companies for this much higher rate. Also, on a separate note....with regards to E/M codes, I assume that a dentist is not considered a physician and is not allowed to bill E/M codes using their own tax id. Thanks for any insights!