Should I use Emergency Room or Outpatient E&M codes when my provider is called to the ER to see a patient?

If the emergency department physician requests that another physician evaluate a given patient, that physician should bill an emergency department visit code.  Any physician seeing a patient registered in the emergency department may use emergency department visit codes (for services matching the code description).  It is not required that the physician be assigned to the emergency department.

If the patient is admitted to the hospital by the second physician performed the evaluation, he or she should bill an initial hospital care code and not an emergency department visit code.