Final answer:
The five-tier system used to classify patients by levels numbered 1 through 5 is a triage system employed in emergency medicine. It ranges from level 1 for immediate life-saving interventions to level 5 for non-life-threatening conditions.
Step-by-step explanation:
The type of assessment which uses a five-tier system that classifies patients by levels numbered 1 through 5 is commonly used in triage, especially in emergency medicine.
This system is designed to prioritize patient care based on the severity of their condition.
The levels typically range from level 1, which indicates a need for immediate life-saving intervention, to level 5, which is for minor injuries and illnesses that are non-life-threatening.