[Superfraggle]

Code Gray/Grey

• A combative person with no weapon under HASC suggestions.
• A security emergency (New Jersey Hospital Association).
• In the Calgary Health Region a Code Grey denotes an air quality issue, or need to enact an air exclusion plan (i.e. shutting off external air circulation, closing windows and doors).
• Severe Weather (Cook Children's Medical Center, Fort Worth, TX)
• Emergency team response for inpatient stroke.
• Air Exclusion (Ontario)
• Unruly Patient/Visitor (Tampa General Hospital)
• Patient in violent (psychotic) episode needing restraint/sedative medication

from http://dictionary.sensagent.com/code+blue/en-en/