CPT Code 99421: Online Digital E/M, Patient-Initiated, 5–10 Minutes

No. If the digital exchange leads to or relates to an in-person visit or E/M service within the seven-day period, 99421 cannot be billed.

Not traditionally. While it may fall under telehealth services provided remotely, 99421 is not considered a Medicare telehealth service unless specific originating site restrictions are met. It supports online digital evaluation and management, not live interaction.

Only the time spent by the qualified health care professional on personal review, evaluation, medical decision-making, and communication, not clinical staff focused time or administrative tasks.