When billing, modifier 5902 is added to the service code to indicate that the service was delivered via:

• A. Real-Time Video Telehealth
• B. In-Person Visit
• C. Audio-Only Phone Call
• D. Written Correspondence

Answer: (A)

Modifiers tell the payer how the service was delivered. A modifier that flags telehealth specifies the mode, and 5902 denotes real-time video telehealth—a live, two-way audiovisual encounter between clinician and patient. This is distinct from an in-person visit (no telehealth), an audio-only phone call (no video), or written correspondence (asynchronous). The defining feature is the real-time, interactive video component, which is what this modifier communicates for billing.