Clinical reasoning in the emergency room, built from real de-identified ER records.

ER-REASON is a benchmark in healthcare AI. Clinical reasoning in the emergency room, built from real de-identified ER records. Scores are reported as: Reasoning-step and outcome accuracy.

Audited by MedCheckMehandru et al., 2025

Key facts

What it measuresClinical reasoning in the emergency room, built from real de-identified ER records.
Who should careEmergency medicine and triage tool builders.
Use it whenTesting reasoning under time pressure and incomplete information.
Do not use it forElective or outpatient workflows.
Score scaleReasoning-step and outcome accuracy.
Grader methodunknown
First released2025
LanguagesEnglish
Use casesclinical decision support, agentic
CitationMehandru et al., 2025
Statusactive

Paper

Frequently asked questions

What does ER-REASON measure?

Clinical reasoning in the emergency room, built from real de-identified ER records.

Who should use ER-REASON?

Emergency medicine and triage tool builders. Testing reasoning under time pressure and incomplete information.

What should ER-REASON not be used for?

Elective or outpatient workflows.

How are ER-REASON scores reported?

Reasoning-step and outcome accuracy. Scores from different benchmarks are not comparable to each other.

Is ER-REASON independent?

No conflicts of interest have been verified for ER-REASON in this registry as of 2026-08-05. Absence of a recorded conflict means none has been verified, not that none exists.

Compare with

AgentClinic

Simulated clinical encounters where the model must gather information over several turns rather than answer on

BRIDGE

Real clinical practice text, drawn from actual notes rather than exam material, across many languages and task

CliMedBench

Large-scale Chinese benchmark built around real clinical scenarios rather than exam questions.

ClinicBench

Broad clinical benchmark covering summarization, diagnosis and treatment planning in one suite.

CMB

Comprehensive Chinese medical benchmark spanning exam knowledge and clinical case work.

EHRNoteQA

Questions answered from real discharge summaries, written by clinicians for real-world practice.

Last verified 2026-08-05. Governance and conflict data compiled by Healthcare Discovery from primary sources, each linked above. Seed inventory from Ma et al., Beyond the Leaderboard, ACL 2026. How we verify · All 63 entities