Final answer:
The code that would be used for a new patient with a comprehensive history, comprehensive exam, moderate medical decision, and a problem or condition rated as moderate to high with an average time of 45 minutes is 99204.
Step-by-step explanation:
The code that would be used for a new patient with a comprehensive history, comprehensive exam, moderate medical decision, and a problem or condition rated as moderate to high with an average time of 45 minutes is 99204.