For an office visit for a new patient, which code represents detailed history and detailed exam with moderate medical decision-making?

The correct code for an office visit for a new patient that represents a detailed history, detailed examination, and moderate medical decision-making is indeed 99204. In the context of Evaluation and Management (E/M) coding, this code is specifically designated for new patients who require a moderate level of complexity in their care.

When assigning E/M codes, documentation plays a crucial role. A detailed history indicates that the provider has collected extensive information about the patient's medical history, including a review of systems and the patient's social and family history. A detailed exam shows that the provider has conducted an in-depth physical examination to assess the patient’s health status.

Moderate medical decision-making involves a review of the existing problems, the amount of data to be reviewed, and the risk factors associated with the patient's condition. For a patient requiring moderate decision-making, there may be multiple problems, or a new problem that requires additional workup and management.

This combination of detailed history, examination, and moderate complexity in decision-making aligns precisely with the coding characteristics of 99204, thereby making it the appropriate choice for this scenario.