Which item is NOT a component of the EMS minimum data set?

• A. Time of arrival on scene
• B. Time incident was reported to 911
• C. Caller’s phone number
• D. Patient's demographics

Answer: (C)

EMS minimum data set includes the essential incident and patient information needed to document the encounter, support care, and analyze system performance. Time of arrival on scene is captured to measure the on-scene and overall response time, a key performance metric. Time incident was reported to 911 establishes the timeline from call receipt to EMS dispatch, helping assess dispatch effectiveness. Patient demographics are recorded to identify the patient and support public health and continuity of care. The caller’s phone number, while potentially useful for follow-up in other contexts, is not part of the standard minimum data set elements. Therefore, the item that is not included is the caller’s phone number.