Wondering what others do in this scenario: Dr. A sees an ED patient, works up the patient, renders a diagnosis and documents such in patient record. This is just before shift change, but the patient is not discharged or admitted, so the case is handed off to Dr. B, who reviews the record and comes up with a different diagnosis. Which one should be coded as the 1st listed diagnosis (assuming patient is not admitted)? Who would take precedence? And should both be coded?