Final answer:
The correct CPT code for a medical consultation with comprehensive history, detailed exam, and low MDM in an inpatient setting, along with documentation, is code 99252.
Step-by-step explanation:
The question relates to the correct coding for a medical consultation performed in an inpatient setting. Considering the details provided (comprehensive history, detailed exam, low Medical Decision Making (MDM), with written report and referral), the correct Current Procedural Terminology (CPT) code appears to be 99252. This code is fitting for a consultation that includes a comprehensive history and detailed examination with low MDM, exactly as described in the scenario. The other codes (99243, 99251, 99253) either correspond to outpatient consultations or different levels of service not described here.