Final answer:
The correct CPT code for a patient who was admitted and discharged on the same day with a detailed history, exam, and moderate MDM is 99234.
Step-by-step explanation:
The question pertains to the correct coding for a patient admitted and discharged from an inpatient facility on the same day, with a detailed history and exam, and moderate Complexity of Medical Decision Making (MDM) performed. The correct code for this scenario is A. 99234. This code is part of a range of Current Procedural Terminology (CPT) codes used for hospital observation or inpatient hospital care, including the provision of the admission and discharge services on the same date. Code 99234 indicates that the patient has received a detailed history and exam, with moderate MDM, just as described in the question.