Summary

This table is a simplified summary of the emergency codes documented in this article. Note that there may be additional nuances to meaning and cause in individual regions, and some uncommon codes or callouts are omitted for brevity. More information is given in other sections.

Standardised color codes

Australia

Australian hospitals and other buildings are covered by Australian Standard 4083 (1997)¹

• Code black: security needed, someone is armed, and is a threat to themselves or others
• Code grey: security needed, someone is unarmed, and is a threat to themselves or others
• Code blue: life-threatening medical emergency
• Code brown: external emergency (disaster, mass casualties, etc.)
• Code orange: evacuation
• Code purple: bomb threat
• Code red: fire
• Code yellow: internal emergency
• MET call: a medical emergency that is not cardiac or respiratory arrest; not a code blue situation, but one that may escalate to code blue
• Code pink: a mother is going into labour unexpectedly, or there is a newborn medical emergency

Victoria (state)

Emergencies (public hospital services)

• Code red - fire/smoke
• Code orange - disaster
• Code purple - bomb
• Code black - serious violence or threat with weapons requiring police
• Code grey - physical threat requiring security.
• Code blue - cardiac/respiratory arrest or non-patient (visitor, staff) medical emergency or patient in non-clinical area also "MET call" medical emergency or deteriorating patient in a clinical area.
• Code yellow - internal emergency
• Code brown - external disaster

Canada

Alberta

Codes in Alberta are prescribed by Alberta Health Services.²

• Code black: bomb threat/suspicious package
• Code blue: cardiac arrest/medical emergency
• Code brown: chemical spill/hazardous material
• Code green: evacuation
• Code grey: shelter in place/air exclusion
• Code orange: mass casualty incident
• Code purple: hostage situation
• Code red: fire
• Code white: violence/aggression
• Code yellow: missing patient
• Code 66: rapid medical intervention to prevent the patient deteriorating

British Columbia

Codes used in British Columbia, prescribed by the British Columbia Ministry of Health.³

• Code amber: missing or abducted infant or child
• Code black: bomb threat
• Code blue: cardiac or respiratory arrest
• Code brown: hazardous spill
• Code green: evacuation
• Code grey: system failure
• Code orange: disaster or mass casualties
• Code pink: pediatric emergency or obstetrical emergency
• Code red: fire
• Code white: aggression
• Code yellow: missing patient
• Code silver: active shooter
• Code 77: stroke
• Code 99: incoming trauma

Manitoba

Codes used in Manitoba as defined in WRHA policy,"Codes: Standardized Emergency"; policy No. 50.00.010⁴

• Code red: fire
• Code blue: cardiopulmonary arrest
• Code orange: disaster (external influx of patients)
• Code green: evacuation
• Code yellow: missing patient/resident
• Code black: bomb threat/search
• Code white: violent incident
• Code brown: internal chemical spill
• Code grey: external air contamination (exclusion)
• Code pink: abduction (infant, child, dependant adult)
• Code 25: medical emergency

Nova Scotia

The following codes are in use in Nova Scotia.⁵⁶

• Code black: bomb threat
• Code blue: cardio/respiratory arrest, choking, or other life-threatening emergency
• Code brown: hazardous substance spill/release
• Code census: emergency department overcrowding⁷
• Code green precautionary: evacuation (precautionary)
• Code green stat: evacuation (crisis)
• Code grey: external air exclusion/shelter in place
• Code orange: external disaster/reception of mass casualties
• Code pink: pediatric emergency and/or obstetrical emergency
• Code red: fire
• Code silver: person with a weapon
• Code white: violent person/situation
• Code yellow: missing patient/client

Ontario

In Ontario, a standard emergency colour code system set by the Ontario Hospital Association (OHA) is used, with minor variations for some hospitals. Additional clinical codes, such as code transfusion, code trauma, code 99,⁸ etc. are not set by the OHA.⁹¹⁰¹¹

• Code amber: missing child/child abduction
• Code black: bomb threat/suspicious object
• Code blue: cardiac arrest/medical emergency
• Code brown: in-facility hazardous spill
• Code green: evacuation (precautionary)
• Code green stat: evacuation (crisis)
• Code grey: infrastructure loss or failure
• Code grey button-down: external air exclusion
• Code orange: external disaster
• Code orange CBRN: CBRN (chemical, biological, radiological, and nuclear) disaster
• Code pink: cardiac arrest/medical emergency – infant/child
• Code purple: hostage taking
• Code red: fire
• Code silver: active attacker
• Code white: violent/behavioural situation
• Code yellow: missing person

Quebec

The following codes are in use in Quebec.¹²

• Code black: bomb threat/suspicious object
• Code blue: adult cardiac or respiratory arrest, loss of consciousness
• Code brown: in-facility hazardous spill
• Code green: evacuation
• Code orange: external disaster
• Code pink: pediatric cardiac or respiratory arrest, loss of consciousness
• Code purple/lavender: infant/neonatal cardiac or respiratory arrest
• Code red: fire
• Code white: violent patient
• Code yellow: missing or lost patient
• Code silver: active shooter

Saskatchewan

Codes used in Saskatchewan, prescribed by the Saskatchewan Health Authority.¹³

• Code red: fire and water
• Code orange: incoming casualties/expanded services
• Code green: evacuation/relocation
• Code black: bomb threat/suspicious package
• Code purple: hostage taking
• Code white: aggressive/hostile/combative person
• Code yellow: missing person
• Code blue: cardiac/respiratory arrest
• Code brown: hazardous material/chemical spill
• Code silver: active assailant/person with a weapon

Yukon

The following codes are in use in Yukon.¹⁴

• Code black: bomb threat
• Code blue: cardiac or respiratory arrest
• Code brown: hazardous material
• Code gold: earthquake (Yukon has the highest seismic activity rate in Canada)¹⁵
• Code green stage 1: partial evacuation to a safe area within the building
• Code green stage 2: complete evacuation of the building
• Code grey: shelter in place/air exclusion
• Code orange: mass casualty
• Code red: fire
• Code white: aggressive behaviour
• Lockdown: violent situation/hostage taking
• Code yellow: missing patient

United Kingdom

In the UK, hospitals have standardised codes across individual NHS trusts (England and Wales) and health boards (Scotland), but there are not many standardised codes across the entire NHS. This allows for differences in demands on hospitals in different areas, and also for hospitals of different roles to communicate different alerts according to their needs (e.g., a major trauma centre like St. George's Hospital in South London has different priority alert needs to a rural community hospital like West Berkshire Community Hospital). Some more standardised codes are as follows:

• Code black: hospital at capacity – no available beds for new admissions from A&E. A code black is declared by the hospital's general bed manager, who then relays this to the local ambulance service and posts updates for local healthcare services such as GPs and district nursing teams.¹⁶
• Code red: This is the United Kingdom's rapid response code. This call gets specialist doctors and trauma teams to the location for assistance in things like major traumas and deteriorating patients in situations like choking or airway compromise. This call also can be used to activate a major hemorrhage protocol in the event of a massive bleed. This call is referred to as code red, staff assist, trauma protocol or rapid response. This is the only emergency protocol which has a code. The only other is what is announced as a mass casualty protocol not any codes. This is to show a major incident has taken place like a terrorist attack and the protocol is activated to alert specialists and begin special emergency procedures like mass casualty triage and decontamination.
• Major haemorrhage protocol – activated via the code red system. A peri-arrest call is put out, but the transfusion lab is also alerted. A specified number of units of O-negative packed red blood cells, and sometimes fresh frozen plasma and platelets, are immediately sent to the location of the call. The transfusion lab will cross-match any saved blood samples for the patient, or await an urgent cross-match sample to be sent. Once this is done, units matching the patient's blood type will be continually sent until the major haemorrhage protocol is stood down.

Otherwise, non-colour codes are mostly used across the NHS:

• 2222 (crash call or peri-arrest call) – dialing 2222 from any internal phone in nearly all NHS hospitals will connect the caller immediately to the switchboard. The caller can then specify the type of cardiac arrest or peri-arrest call (usually adult, paediatric (or neo-natal) or obstetric) and give a location (eg "Adult cardiac arrest, Surgical Admissions Unit, ground floor B block" or "Obstetric peri-arrest, obstetric theatres, 4th floor maternity wing") and the switchboard will bleep the members of the relevant cardiac arrest or peri-arrest team. Some UK hospitals do not have a peri-arrest team, and the cardiac arrest team can be used for urgent medical emergencies where cardiac arrest is imminent.
• 3333 (security alert)
• 4444 (fire alert)
• "Fast bleep" codes – a 2222 call for a specific member of staff. For example, in status epilepticus, it is not necessary to call the crash team (as is done in cardiac arrest) but a fast bleep can be made to the on-call anaesthetist to come urgently.
• Trauma call – adult (trauma centres only): usually called over a PA system across the emergency department, triggering a "trauma call" paging request to all members of the trauma team - including a trauma surgeon and senior members their surgical team, an anaesthetist and ODP, emergency medicine consultant or registrar and members of their team (this will be usually be an FY1 or SHO). Trauma calls are similar to "resus codes" used in the US.
  • Trauma call – paediatric (trauma centres only): triggers a "trauma call" paging request to all members of the paediatric trauma team - including a trauma surgeon and senior members of their surgical team, often additionally a paediatric surgeon, a paediatric anaesthetist, ODP, (paediatric) emergency medicine consultant or registrar and members of their team (this will be usually be an FY1 or SHO).

United States

In 2000, the Hospital Association of Southern California (HASC)¹⁷¹⁸¹⁹ determined that a uniform code system was needed after three people were killed in a shooting incident at a hospital after the wrong emergency code was called. While codes for fire (red) and medical emergency (blue) were similar in 90% of California hospitals queried, 47 different codes were used for infant abduction and 61 for combative person. In light of this, the HASC published a handbook titled Healthcare Facility Emergency Codes: A Guide for Code Standardization listing various codes and has strongly urged hospitals to voluntarily implement the revised codes.

In 2003, Maryland mandated that all acute hospitals in the state have uniform codes.²⁰

In 2008, the Oregon Association of Hospitals & Health Systems, Oregon Patient Safety Commission, and Washington State Hospital Association formed a taskforce to standardize emergency code calls.²¹ After both states had conducted a survey of all hospital members, the taskforce found many hospitals used the same code for fire (code red); however, there were tremendous variations for codes representing respiratory and cardiac arrest, infant and child abduction, and combative persons. After deliberations and decisions, the taskforce suggested the following as the Hospital Emergency Code:²²

• Amber Alert/Code Adam: infant/child abduction
• Code black: bomb threat
• Code blue: heart or respiration stops (an adult or child’s heart has stopped or they are not breathing)
• Code brown: used to indicate severe weather
• Code clear: announced when emergency is over
• Code gray: combative person (combative or abusive behavior by patients, families, visitors, staff or physicians); if a weapon is involved code silver should be called
• Code green: emergency activation.
• Code orange: hazardous spills (a hazardous material spill or release; unsafe exposure to spill)
• Code pink: infant abduction, pediatric emergency and/or obstetrical emergency
• Code red: fire (also someone smoking in facility; alternative: massive postpartum hemorrhage)
• Code silver: weapon or hostage situation
• Code white: neonatal emergency, aggressive person or evacuation dependent on hospital. In some hospitals, an aggressive person is called as a Code Violet.
• External triage: external disaster (external emergencies impacting hospital including: mass casualties; severe weather; massive power outages; and nuclear, biological, and chemical incidents)
• Internal triage: internal emergency (internal emergency in multiple departments including: bomb or bomb threat; computer network down; major plumbing problems; and power or telephone outage.)
• Rapid response team: medical team needed at bedside (a patient's medical condition is declining and needs an emergency medical team at the bedside) prior to heart or respiration stopping

Plain-language alerts

In 2015, the South Carolina Hospital Association formed a work group to develop plain language standardization code recommendations. Abolishing all color codes was suggested.²³ In 2016, the Texas Hospital Association encouraged the use of standardized plain language emergency alerts at all Texas hospitals.²⁴ The only color code that was still recommended was "code blue," meaning a cardiac arrest.

Plain language alerts are announced using the following format: Alert type + description + location (general to specific) + instructions (if applicable).²⁵²⁶ For example, if a patient in ICU Bed 4 went into cardiac arrest, the alert would be "Medical alert + code blue + second floor + intensive care unit + bed 4."

Codes

Note: Different codes are used in different hospitals.

Code blue

"Code blue" redirects here. For other uses, see Code Blue.

"Code blue” is used to indicate that a patient requires resuscitation or is in need of immediate medical attention, most often as the result of a respiratory arrest or cardiac arrest. When called overhead, the page takes the form of "Code blue, [floor], [room]" to alert the resuscitation team where to respond. Every hospital, as a part of its disaster plans, sets a policy to determine which units provide personnel for code coverage. In theory any medical professional may respond to a code, but in practice, the team makeup is limited to those with advanced cardiac life support or other equivalent resuscitation training. Frequently these teams are staffed by physicians from anesthesia, internal medicine or emergency medicine, respiratory therapists, pharmacists, and nurses. A code team leader will be a physician in attendance on any code team; this individual is responsible for directing the resuscitation effort and is said to "run the code".

This phrase was coined at Bethany Medical Center in Kansas City, Kansas.²⁷ The term "code" by itself is commonly used by medical professionals as a slang term for this type of emergency, as in "calling a code" or describing a patient in arrest as "coding" or "coded".

• Australian standard²⁸
• Californian standard²⁹

In some hospitals or other medical facilities, the resuscitation team may purposely respond slowly to a patient in cardiac arrest, a practice known as "slow code", or may fake the response altogether for the sake of the patient's family, a practice known as "show code".³⁰ Such practices are ethically controversial,³¹ and are banned in some jurisdictions.

Variations

"Plan blue" was used at St. Vincent's Hospital in New York City to indicate arrival of a trauma patient so critically injured that even the short delay of a stop in the ER for evaluation could be fatal; "plan blue" was called out to alert the surgeon on call to go immediately to the ER entrance and take the patient for immediate surgery.

"Doctor" codes

"Doctor" codes are often used in hospital settings for announcements over a general loudspeaker or paging system that might cause panic or endanger a patient's privacy. Most often, "doctor" codes take the form of "Paging Dr. Sinclair", where the doctor's "name" is a code word for a dangerous situation or a patient in crisis, e.g.: "Paging Dr. Firestone, third floor," to indicate a possible fire on the floor specified.

"Resus" codes

Specific to emergency medicine, incoming patients in immediate danger of life or limb, whether presenting via ambulance or walk-in triage, are paged locally within the emergency department as "resus" [ri:səs] codes. These codes indicate the type of emergency (general medical, trauma, cardiopulmonary or neurological) and type of patient (adult or pediatric). An estimated time of arrival may be included, or "now" if the patient is already in the department. The patient is transported to the nearest open trauma bay or evaluation room, and is immediately attended by a designated team of physicians and nurses for purposes of immediate stabilization and treatment.

See also

• Inspector Sands, code used over PA system in British public transport to indicate a serious situation
• Vessel emergency codes codes used on cruise ships.

External links

• Codes Listing, Texas Tech University Health Sciences Center

References

1. AS 4083-1997 Planning for emergencies-Health care facilities http://www.saiglobal.com/PDFTemp/Previews/OSH/as/as4000/4000/4083.pdf ↩

2. "AHS Emergency / Disaster Management" (PDF). Edmonton, AB: Alberta Health Services. Archived (PDF) from the original on 23 April 2019. Retrieved 25 September 2018. http://fhd.athabascau.ca/programs/undergrad/lpn-bn/docs/ahs_emergency.pdf ↩

3. "BC Standardized Hospital Colour Codes" (PDF). Victoria, BC: British Columbia Ministry of Health. 21 January 2011. Archived (PDF) from the original on 10 January 2019. Retrieved 5 October 2017. https://www2.gov.bc.ca/assets/gov/health/keeping-bc-healthy-safe/health-emergency-response/standardized-hospital-colour-codes.pdf ↩

4. "Codes: Standardized Emergency". Winnipeg Regional Health Authority. Accessed May 7, 2025. https://wrha.mb.ca/files/wrha-policy-50-00-010.pdf ↩

5. "Emergency Voice Codes Poster" (PDF). Nova Scotia Health Authority - Corporate. Retrieved 2022-09-07. https://cdha.nshealth.ca/system/files/sites/8574/documents/emergency-voice-codes-poster.pdf ↩

6. "Policy Template". Nova Scotia Health Authority. Retrieved 2022-09-07. http://policy.nshealth.ca/Site_Published/NSHA/document_render.aspx?documentRender.IdType=6&documentRender.GenericField=&documentRender.Id=68298 ↩

7. "Health Authorities Act (amended)". Nova Scotia Legislature. 27 November 2017. Retrieved 2022-09-07. https://nslegislature.ca/legc/bills/63rd_1st/1st_read/b022.htm ↩

8. "KGH Emergency code review" (PDF). kingstonhsc.ca.{{cite web}}: CS1 maint: url-status (link) https://kingstonhsc.ca/sites/default/files/legacy/documents/basic-page/khsc_annual_condensed_2021_other_codes_final.pdf ↩

9. "OHA Emergency Management Toolkit" (PDF). Toronto, ON: Ontario Hospital Association. 31 March 2013. Archived (PDF) from the original on 21 November 2018. Retrieved 5 October 2017. https://www.oha.com/Documents/Emergency%20Management%20Toolkit.pdf ↩

10. "Emergency Codes". North York General Hospital. Archived from the original on 4 July 2019. https://www.nygh.on.ca/patients-and-visitors/visitor-information/health-and-safety/emergency-codes ↩

11. "Emergency Codes". Sunnybrook Health Sciences Centre. Archived from the original on 22 November 2018. http://sunnybrook.ca/content/?page=Patient_EmergPrep_Codes ↩

12. "Codes d'alerte en mesure d'urgence". Santé Montréal. Retrieved 2022-08-13.[permanent dead link] https://santemontreal.qc.ca/en/professionnels/mesures-durgence/mission-et-gouvernance/codes-dalerte/ ↩

13. "DIRECTOR & EXECUTIVE DIRECTOR On-call Reference Manual & Resources" (PDF). Saskatchewan Health Authority. Retrieved 6 September 2022.[permanent dead link] https://www.saskhealthauthority.ca/sites/default/files/2021-06/Manual-on-call-Director-and-ED_0.pdf ↩

14. "Volunteer Handbook - Volunteer Services, Yukon Hospitals" (PDF). Retrieved 2023-11-18. https://yukonhospitals.ca/sites/default/files/2022-01/volunteer_handbook_-_april_2017.pdf ↩

15. Government of Canada, Natural Resources Canada. "Simplified seismic hazard map for Canada, the provinces and territories". seismescanada.rncan.gc.ca. Retrieved 2022-09-05. https://seismescanada.rncan.gc.ca/hazard-alea/simphaz-en.php#YT ↩

16. "NHS Warns Code Black Status Pressure Services Mount". Herald of Scotland. July 16, 2021. https://www.heraldscotland.com/news/homenews/19448329.dumfries-galloway-nhs-warns-code-black-status-pressure-services-mounts/ ↩

17. "Hospital Emergency Codes". Archived from the original on 2018-10-05. Retrieved 2018-03-19. https://web.archive.org/web/20181005013433/http://www.hasc.org/resource/hospital-emergency-codes ↩

18. California Healthcare Association News Briefs July 12, 2002Vol. 35 No. 27 Archived December 2, 2008, at the Wayback Machine http://www.hasc.org/download.cfm?ID=6960 ↩

19. "2014 Emergency Codes". Archived from the original on 2018-02-05. Retrieved 2018-03-19. https://web.archive.org/web/20180205223055/http://www.hasc.org/sites/main/files/file-attachments/2014_emergency_codes_final_5_15_14_0.doc ↩

20. ".33 Uniform Emergency Codes". Maryland Division of State Documents. Archived from the original on 15 March 2019. http://www.dsd.state.md.us/comar/comarhtml/10/10.07.01.33.htm ↩

21. "Standardization Emergency Codes Executive Summary" (PDF). Washington State Hospital Association. October 2008. Retrieved July 11, 2016. http://www.wsha.org/wp-content/uploads/Standardization_EmergencyCodesExceutiveSummary.pdf ↩

22. "Standardization Poster Emergency Code Call" (PDF). Washington State Hospital Association. January 2009. http://www.wsha.org/wp-content/uploads/Standardization_PosterEmergencyCodeCallsAA.pdf ↩

23. "Plain Language Emergency Codes Implementation Tool Kit" (PDF). South Carolina Hospital Association. Archived from the original (PDF) on 25 February 2017. Retrieved 24 February 2017. https://web.archive.org/web/20170225051321/https://www.scha.org/files/documents/plainlanguage_toolkit_16.pdf ↩

24. "Plain-Language Emergency Alerts | Texas Hospital Association". www.tha.org. 3 April 2022. Retrieved 2022-09-19. https://www.tha.org/issues/emergency-preparedness/plain-language-emergency-alerts/ ↩

25. "Plain-Language Emergency Alerts | Texas Hospital Association". www.tha.org. 3 April 2022. Retrieved 2022-09-19. https://www.tha.org/issues/emergency-preparedness/plain-language-emergency-alerts/ ↩

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29. "Hospital Emergency Codes". Archived from the original on 2018-10-05. Retrieved 2018-03-19. https://web.archive.org/web/20181005013433/http://www.hasc.org/resource/hospital-emergency-codes ↩

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