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Calcimator

Triage Score Calculator

Emergency Severity Index (ESI) triage level from acuity assessment and resource needs.

Inputs

Results

ESI Level (1-5)

4

Recommended Disposition4
Expected Wait (minutes)60
Resources Predicted1
Admission Likelihood (%)10
How to Use This Calculator
  1. Toggle Life-Threatening Condition and High-Risk Situation flags based on chief complaint.
  2. Enter the Number of Resources Expected (labs, imaging, IV, meds) for this visit.
  3. Toggle Vital Signs Abnormal if any vital is outside normal range.
  4. Review ESI Level (1-5) — ESI 1 requires immediate resuscitation, ESI 5 requires no resources.
  5. Use Recommended Disposition, Expected Wait, and Admission Likelihood to guide bed assignments.

What each input means

Life-Threatening Condition?
Requires immediate life-saving intervention.
High-Risk Situation?
Severe pain, altered mental status, or high-risk mechanism.
Number of Resources Expected
Resources: labs, imaging, IV fluids, procedures, specialty consult, etc.
Vital Signs Abnormal?
1 = Yes (outside normal ranges for HR, RR, or SpO2), 0 = No.

What each result means

ESI Level (1-5)
1 = Resuscitation, 2 = Emergent, 3 = Urgent, 4 = Less Urgent, 5 = Non-Urgent.
Recommended Disposition
1 = Resuscitation bay, 2 = Emergent bed, 3 = Urgent care, 4 = Fast-track, 5 = Waiting room.
Expected Wait (minutes)
General guideline for target time-to-provider.
Resources Predicted
Number of resource types expected during visit.
Admission Likelihood (%)
Estimated probability of hospital admission by ESI level.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Life-Threatening Condition? = 0, High-Risk Situation? = 0, Number of Resources Expected = 1, Vital Signs Abnormal? = 0 = 4 input(s) provided
  2. Calculate ESI Level
    4 = 4
  3. Calculate Recommended Disposition
    4 = 4
  4. Calculate Expected Wait
    Expected Wait
    60 = 60

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