Modifier 57 (decision for surgery) is added to an E/M code if the surgeon sees the patient and then, based upon the evaluation of the patient, decides to proceed with surgery either the same or the following day.
The US Department of Defense Dictionary of Military and Associated Terms. defines command and control as: The exercise of authority and direction by a properly designated commander over assigned and attached forces in the accomplishment of the mission.
In the armed forces, a command is a group of officers who are responsible for organizing and controlling part of an army, navy, or air force. He had authorisation from the military command to retaliate. The army's supreme command has said the army will withdraw, provided the other side does so also.