definition of code blue by Medical dictionary

1. A medical emergency in which a team of medical personnel work to revive an individual in cardiac arrest.

2. An order given to initiate such work.

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

A message announced over a hospital’s public address system, indicating that a cardiac arrest or respiratory arrest requiring CPR is in progress; to be ‘coded’ is to undergo CPR. In some facilities, the term is confined to cardiorespiratory emergencies in adults and children, in others, just for adults, also
(1) Any adult emergency
(2) Tornado warning

Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

code blue Code Emergency medicine A message announced over a hospital's public address system, indicating that a cardiac arrest requiring CPR is in progress; to be 'coded' is to undergo CPR

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

code blue (kōd blū)

In some health care facilities, oral announcement concerning a patient whose state of cardiac arrest is such as to require urgent use of cardiopulmonary resuscitation.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012