Final answer:
Triage tags require a unique identifier and a triage category to help prioritize patient care in emergency situations. The identifier is a unique number or code, and the category is commonly represented with a color-coding system reflecting the urgency of medical needs.
Step-by-step explanation:
The main information needed on a triage tag is a unique identifier and a triage category. Triage tags are used in emergency situations to quickly identify the severity of a patient's condition and prioritize their care accordingly. The identifier is typically a number or code that uniquely identifies the patient, and the triage category indicates the priority level of the patient's need for medical attention, which is often color-coded. For instance, red might indicate immediate care is necessary, yellow suggests urgent but not life-threatening conditions, green is for minor injuries, and black is used for those who are deceased or beyond help.