Final answer:
The correct E/M services for the ED physician in this case are 99284-25 for the detailed ED visit, 99156 for the first hour of moderate sedation, and 99157 for each additional 15 minutes of sedation.
Step-by-step explanation:
The appropriate Evaluation and Management (E/M) services for the Emergency Department (ED) physician in this scenario are 99284-25, 99156, 99157. This code reflects a high severity ED visit that requires a detailed history and examination (99284). The -25 modifier is used to indicate that a significant, separately identifiable E/M service was provided on the same day as the conscious sedation. Codes 99156 and 99157 represent the first hour of physician provided moderate sedation for a patient less than 5 years old, and each additional 15 minutes of sedation, respectively. These E/M codes accurately represent the ED physician’s assessment and provision of moderate sedation, as well as their extensive evaluation across multiple systems.