Final answer:
The correct CPT code for a new patient with a comprehensive history and exam, high medical decision making, and moderate to high problem severity, averaging 60 minutes, is 99205.
Step-by-step explanation:
The code that would be used for a New Patient with a Comprehensive history, Comprehensive exam, and High medical decision making; with the problem or condition being moderate to high and the average time being 60 minutes, is A) 99205. This code is part of the Current Procedural Terminology (CPT) and is typically used by healthcare providers to document and bill for initial patient visits that include a comprehensive history and physical examination, and when the medical decision making is of high complexity. It should be selected when the service provided matches the described scenario, which in this case it does.