Question: When our providers perform online digital E/M services (99421-99423) services, what activities count toward cumulative service time? 星空入口Forum Participant Answer: According to CPT庐, the physician鈥檚 cumulative service time includes: Any subsequent communication with the patient through online, telephone, email, or other digitally supported communication does not otherwise represent a separately reported E/M service. Important: 鈥淎ll professional decision making, assessment, and subsequent management by physicians or other QHPs in the same group practice contribute to the cumulative service time of the patient鈥檚 online digital E/M service,鈥 per CPT庐.