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Inpatient fall risk score: fall recency window · case 02

A fall from years ago still adds 25 points.

Member previewVariant 2 · 3 implementations · 11 checks per implementation

Case contract

Input {last_fall_days (or null), secondary_dx, aid, iv, gait, mental}. Toy points: a fall within the last 90 days (inclusive) 25; secondary diagnosis 15; aid none/bedrest/nurse 0, crutches/cane/walker 15, furniture 30; IV access 20; gait normal/bedrest/immobile 0, weak 10, impaired 20; mental status "forgets" or "overestimates" (overestimates own ability) 15, "oriented" 0. Risk: 0-24 LOW, 25-44 MODERATE, >= 45 HIGH. Return {score, risk}.

Why this case matters

Nursing risk scores map categorical observations to weighted points; recency windows, category tables and band edges fail independently.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
fall a year ago	`{"risk": "HIGH", "score": 45}`	`{"risk": "LOW", "score": 20}`	Failed

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