MUST Malnutrition Score Calculator

Malnutrition Universal Screening Tool (MUST)

Clinical Decision Tool

Calculates adult malnutrition risk from BMI, unplanned weight loss and acute-disease effect.

BMI Category

0 — BMI above 20 0 1 — BMI 18.5–20 +1 2 — BMI below 18.5 +2

Unplanned Weight Loss in the Previous 3–6 Months

0 — Below 5% 0 1 — 5–10% +1 2 — Above 10% +2

Acute Disease Effect

0 — No 0 2 — Yes — acutely ill and no nutritional intake, or likely no intake, for more than 5 days +2

Clinical Decision Support Only

MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress.

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