DHO Careers in Healthcare Practice Test 2026 – Complete Exam Prep

A Code Blue signals a medical emergency where a patient is in cardiac or medical arrest and needs immediate resuscitation. When this code is called, staff mobilize quickly to start life-saving measures such as high-quality CPR, rapid defibrillation if a shockable rhythm is present, and advanced interventions from the Code Blue team (physician, skilled nurses, respiratory therapist, and other staff as needed). The goal is to restore circulation and stabilize the patient as quickly as possible, because every minute without blood flow increases the risk of brain and organ damage.

It isn’t about a routine patient request, a scheduled procedure, or moving a patient from one location to another. Those would involve different codes or procedures. The critical idea here is that a Code Blue is a rapid, coordinated response to a cardiac or medical arrest to provide immediate resuscitation.