This document provides information about code blue, which is an emergency code used to indicate a patient requiring resuscitation or immediate medical attention due to respiratory or cardiac arrest. It details the responsibilities of the code blue team and committee. When a code blue is announced via the public address system, a primary response team including an intensivist, ER physician, and nurse must promptly perform CPR. An auxiliary response team including additional doctors and technicians should also respond. The code blue team reviews each incident afterwards to analyze effectiveness and identify areas for improvement.