text: SuperCoder Answered Wed 04th of May, 2016 02:06:02 AM
  CPT 94620 has a professional component and a technical component. If your pulmonologist has only done the review and interpretation (professional component), bill CPT code 94620 with 26 modifier. The place where the test has been performed (technical component) will bill the CPT code 94620 with the TC modifier. If both services (professional and technical component) have been performed at the same place, bill the CPT code without any modifier.