Which code is associated with a medical emergency?

• A. Code Grey
• B. Code Green
• C. Code Black
• D. Code 100

Answer: (D)

Hospitals use coded alerts to summon the right team quickly without alarming patients. The key idea here is recognizing that a medical emergency has its own dedicated alert to mobilize clinicians and equipment right away for life‑saving care. In this material, that designation is the one used to signal an immediate medical crisis, so it’s the best fit for a medical emergency. The other codes point to different situations—security issues, evacuations, or other hazards—and do not indicate a medical emergency in this context. Remember that exact meanings can vary by facility, so staff should always consult their own hospital’s code list.