Below is a list summarizing the CPT codes for introduction procedures on the head.
CPT Code 21100
CPT 21100 describes the application of a halo-type appliance for maxillofacial fixation and the removal of the appliance as a separate procedure.
CPT Code 21110
CPT 21110 describes the application of an interdental fixation device for conditions other than fracture or dislocation, as well as the removal of the device.
CPT Code 21116
CPT 21116 describes the injection procedure for a temporomandibular joint arthrography.