Step 1 — BMI Score

BMI > 20 kg/m² — No nutritional risk from BMI+0BMI 18.5–20.0 kg/m² — Borderline low BMI+1BMI < 18.5 kg/m² — Low BMI — high nutritional risk+2

Step 2 — Unplanned Weight Loss in Past 3–6 Months

Weight loss < 5% — Minimal or no recent weight loss+0Weight loss 5–10% — Moderate unintentional weight loss+1Weight loss > 10% — Significant unintentional weight loss+2

Step 3 — Acute Disease Effect

No acute disease effect — Patient eating normally or has been eating <5 days reduced+0+2 — Acutely ill AND has had (or is likely to have) no nutritional intake for ≥ 5 days+2

MUST — Malnutrition Universal Screening Tool

MUST — Malnutrition Universal Screening Tool