code blue: meaning, definition, pronunciation and examples
Low frequency (C1/C2)Technical/Medical, also used metaphorically in informal and journalistic contexts.
Quick answer
What does “code blue” mean?
A standardized hospital emergency alert indicating an adult patient is in cardiopulmonary arrest, requiring immediate resuscitation.
Audio
Pronunciation
Definition
Meaning and Definition
A standardized hospital emergency alert indicating an adult patient is in cardiopulmonary arrest, requiring immediate resuscitation.
By extension, any critical emergency situation requiring an immediate, coordinated response; a state of severe crisis.
Dialectal Variation
British vs American Usage
Differences
Both varieties use the term within medical contexts, largely due to global medical training and media. 'Code blue' is more frequently heard in American English due to the prevalence of medical dramas. British hospitals may use similar 'crash call' systems, but 'code blue' is widely understood.
Connotations
Conveys urgency, high-stakes crisis, and institutional protocol. In metaphorical use, it retains these connotations of dire emergency.
Frequency
Higher frequency in American English due to cultural export of medical TV shows. In British English, it is a recognized technical term but may be less common in everyday metaphorical use.
Grammar
How to Use “code blue” in a Sentence
[Hospital/Team] + call/declare + code blueCode blue + was + declared/called + [for/on Patient]There + is/was + a code blue + [in Location]Vocabulary
Collocations
Examples
Examples of “code blue” in a Sentence
verb
British English
- They decided to code blue the patient after he lost his pulse.
- The team is preparing to code blue if his condition deteriorates.
American English
- The doctor coded the patient blue immediately.
- We need to code blue on this, stat!
adverb
British English
- The team responded code-blue fast. (Informal, rare)
American English
- They ran code-blue to the ICU. (Informal, rare)
adjective
British English
- The code-blue protocol was activated swiftly.
- It was a code-blue scenario from the start.
American English
- She's the code-blue team leader.
- We're in a code-blue situation here, people.
Usage
Meaning in Context
Business
Figuratively: 'The sudden resignation of the CFO caused a code blue in the boardroom.'
Academic
In medical and nursing journals discussing hospital emergency protocols.
Everyday
Rare. Mostly understood through media. 'The power outage at the data centre was a total code blue for the IT team.'
Technical
Standard term in hospital emergency codes. 'Unit 3, code blue, room 412.'
Watch out
Common Mistakes When Using “code blue”
- Using it for any minor problem (overstatement).
- Using 'blue code' (word order error).
- Assuming it means 'sadness' (semantic confusion with 'feeling blue').
FAQ
Frequently Asked Questions
Yes, but only figuratively to describe a situation of extreme crisis requiring an immediate, all-hands response, e.g., 'The data breach was a code blue for the IT security team.'
No. While 'code blue' commonly means cardiac arrest in the US and many places, hospital emergency codes are not universal. Some hospitals use different colours or plain language (e.g., 'crash call' in the UK). Always check local protocols.
Typically, 'code blue' signifies a medical emergency (cardiac/respiratory arrest), while 'code red' often signifies a fire. The specific meanings are defined by each hospital's emergency plan.
The origin is not definitively known. It is part of a colour-coded system of hospital emergency alerts standardized in the US in the late 20th century to convey urgent information quickly and without causing public panic.
A standardized hospital emergency alert indicating an adult patient is in cardiopulmonary arrest, requiring immediate resuscitation.
Code blue is usually technical/medical, also used metaphorically in informal and journalistic contexts. in register.
Code blue: in British English it is pronounced /ˌkəʊd ˈbluː/, and in American English it is pronounced /ˌkoʊd ˈbluː/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “It's not a code blue (figurative: it's not that urgent)”
- “We're at code blue (figurative: we're in a major crisis).”
Learning
Memory Aids
Mnemonic
Imagine a hospital where the walls are painted blue during the most critical emergency – a 'CODE BLUE' – to signal it's serious.
Conceptual Metaphor
A CRISIS IS A MEDICAL EMERGENCY / AN INSTITUTION IS A BODY (experiencing a critical failure).
Practice
Quiz
In which context is 'code blue' used literally and most appropriately?