What is the function of a cpt add on code?
The Add-on code concept in CPT 2012 applies only to add-on procedures or services performed by the same physician. Add-on codes describe additional intra-service work associated with the primary procedure, eg, additional digit(s), lesion(s), neurorrhaphy(s), vertebral segment(s), tendon(s), joint(s).Add-on codes are always performed in addition to the primary service or procedure and must never be reported as a stand-alone code.