Telehealth: T is for telephone: Appendix T lists audio-only CPT codes

Why This Topic Matters

Audio-only telehealth coding remains an area where CPT, Medicare, and payer processing rules can differ. Understanding the appendix, the associated modifier, and the official timing of the update helps reduce claim errors and supports accurate telehealth billing workflows.

Article Sections

1. Appendix T overview and timing

   Introduces the CPT appendix for audio-only telemedicine services and notes when it became available in electronic and print formats. It also places the update in the context of CPT Editorial Panel action.

2. Relationship to Medicare audio-only services

   Compares the CPT appendix with Medicare’s audio-only telehealth listings and notes how the lists overlap. This section also identifies the general context in which the comparison is presented.

3. Modifier 93 and payer processing

   Discusses the reporting of synchronous audio-only services using a CPT modifier and mentions that payer systems may process claims differently. It emphasizes that the article addresses claims workflow considerations rather than clinical care.

4. Appendix T code list

   Presents the Appendix T service list along with short descriptors and status notes where applicable. The list is organized as a reference to the codes included in the appendix.