What NRS-2002 score indicates nutritional risk requiring intervention?

A total score of 3 or more indicates nutritional risk. ESPEN guidelines recommend initiating a nutrition care plan for all patients scoring ≥3. Scores below 3 should be rescreened weekly.

Who developed NRS-2002 and when?

NRS-2002 was developed by Kondrup and colleagues and published in 2003 in Clinical Nutrition. It was developed by the European Society for Clinical Nutrition and Metabolism (ESPEN) based on analysis of 128 randomised controlled trials.

How is the NRS-2002 total score calculated?

The total is the sum of three components: nutritional impairment score (0–3) + disease severity score (0–3) + 1 point if aged 70 or older. Maximum possible score is 7.

What diseases are scored as severe (3 points) for disease severity?

Severe disease includes head injury, bone marrow transplantation, and ICU patients with APACHE II scores above 10. These represent the highest metabolic stress states and nutritional demand.

Does NRS-2002 include an age adjustment?

Yes. One point is added for patients aged 70 or older, reflecting their reduced physiological reserve and greater vulnerability to malnutrition-related complications.

Is NRS-2002 endorsed by international nutrition societies?

Yes. NRS-2002 is the recommended screening tool for hospitalised adults in ESPEN (European Society for Clinical Nutrition and Metabolism) guidelines and is widely adopted internationally.

What is the preliminary screening step in NRS-2002?

The preliminary screen asks four yes/no questions: Is BMI below 20.5? Has the patient lost weight recently? Was food intake reduced in the past week? Is the patient severely ill? A no to all means low risk; any yes triggers full NRS-2002 scoring.

How does NRS-2002 differ from MST?

NRS-2002 includes a formal disease severity score and age adjustment, making it more comprehensive but slower than MST. MST requires only two questions and no clinical disease knowledge, making it better for rapid triage.

Can NRS-2002 be used in ICU patients?

Yes. ICU patients with APACHE II above 10 automatically score 3 for disease severity, meaning almost all critically ill patients will screen positive and require nutritional assessment.

What should happen after a positive NRS-2002 screen?

A positive screen should trigger formal nutrition assessment, goal-setting for energy and protein intake, route selection (oral, enteral, or parenteral), and regular monitoring. Dietary progress should be documented and NRS-2002 repeated periodically.

Is NRS-2002 suitable for paediatric patients?

No. NRS-2002 was validated for adults only. Paediatric nutrition screening requires age-appropriate tools such as STRONG-Kids or STAMP.

What evidence supports NRS-2002 as an outcome predictor?

Positive NRS-2002 status has been linked to increased length of stay, higher complication rates, and greater mortality in hospitalised patients across multiple validation studies and systematic reviews.

Online Medical Tools — NRS-2002

Printed on 9/4/2026

For informational purposes only. This is not medical advice.

Geriatrics

NRS-2002

NRS-2002 is a validated nutrition-risk screening framework recommended for hospitalized adults. It combines undernutrition status, disease severity, and an age adjustment to identify patients likely to benefit from nutritional intervention.

Formula: NRS-2002 total = nutrition-status score + disease-severity score + age adjustment when applicable.

NRS-2002 total score

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How It Works

Assess Nutritional Impairment Status (0–3)

Score the degree of nutritional impairment: 0 = normal; 1 = mild (BMI 20–5, weight loss >5% in 3 months, or reduced intake to ~50–75% of requirement); 2 = moderate (BMI 18.5–20.5 with impaired condition, weight loss >5% in 2 months, or intake 25–60%); 3 = severe (BMI <18.5 with impaired condition, weight loss >5% in 1 month, or intake <25%).

Assess Disease Severity (0–3)

Score metabolic stress from underlying disease: 0 = absent; 1 = mild (hip fracture, chronic illness with acute complication, cirrhosis, COPD, chronic dialysis, diabetes, oncology); 2 = moderate (major abdominal surgery, stroke, severe pneumonia, haematologic malignancy); 3 = severe (head injury, bone marrow transplant, ICU patients with APACHE >10).

Add Age Adjustment and Interpret

Add 1 point if the patient is aged 70 or older. Sum all three components. A total of 3 or more indicates nutrition risk and should trigger individualised nutrition care. Below 3, reassess weekly or at change in clinical status.

Who Uses the NRS-2002

Hospital Admission Triage

Admitting physicians and ward nurses

NRS-2002 is designed for use at hospital admission to systematically identify patients who require nutritional support, enabling early dietitian involvement and nutrition care planning.

Surgical Pre-operative Planning

Surgeons and anaesthetic teams

High NRS-2002 scores before elective surgery flag patients who may benefit from prehabilitation or nutritional optimisation to reduce post-operative morbidity and length of stay.

ICU Nutrition Support Prioritisation

Intensivists and critical care dietitians

Disease severity scoring in NRS-2002 reflects ICU metabolic stress; positive screening helps allocate parenteral or enteral nutrition support resources in critically ill patients.

Oncology and Haematology Nutrition Monitoring

Oncology teams and cancer dietitians

Patients receiving chemotherapy or haematologic treatments often score positively on disease severity; NRS-2002 captures this risk and prompts early nutritional intervention.

Geriatric Inpatient Assessment

Geriatricians and aged care teams

The built-in age adjustment for patients over 70 makes NRS-2002 particularly sensitive for older hospitalised adults, where malnutrition is both more prevalent and more consequential.

Pro Tips

Use the Preliminary Screening First

NRS-2002 has a 4-question preliminary screen. If all four answers are no, rescreen weekly. Only patients answering yes to any item need the full scoring, saving time on low-risk admissions.

Disease Severity Is a Clinical Judgment

The disease severity component requires knowledge of the clinical diagnosis and its metabolic impact. Ensure the clinician scoring has access to the patient's primary diagnosis and acute-illness trajectory.

Age ≥70 Always Adds One Point

The age adjustment reflects that older patients tolerate nutritional depletion less well. Do not overlook this — it frequently tips borderline scores from 2 to 3, triggering appropriate intervention.

Score Based on Current State, Not Admission Diagnosis Alone

Patients' nutritional status and disease severity can change rapidly. Repeat NRS-2002 when there is a major change in condition, especially after surgery, new infection, or altered oral intake.

Score 3 Triggers Action, Not Just Recording

An NRS-2002 score ≥3 should trigger a linked institutional pathway: dietitian referral, nutrition goals, and monitoring frequency. Screening without action has no patient benefit.

Validate Against Available Lab Data

While NRS-2002 does not require labs, available albumin, prealbumin, or CRP results help contextualise nutritional status scores and disease severity judgments, especially in complex patients.

Distinguish Weight Loss from Fluid Shifts

In patients with oedema, ascites, or recent diuresis, weight changes may not reflect lean tissue loss. Adjust the nutritional impairment score based on clinical assessment of muscle and fat stores.

Use in Research and Audit

NRS-2002 is the ESPEN-recommended screening tool for clinical trials involving hospital nutrition. Use it as a standard entry criterion when comparing nutritional interventions.

Common Questions About Your Results

Evidence-Based Methodology

NRS-2002 is guideline-endorsed and validated for predicting nutrition-related outcomes in hospital settings.

Clinical Content Trust

Last reviewed:: April 21, 2026
Guideline version:: General evidence framework v2026.04
Source set version:: Primary-source set v1

How to Interpret Your Result

Higher NRS-2002 totals indicate stronger nutrition-risk signal and need for structured nutrition care.

When to Use This Tool

Use in hospital nutrition screening pathways to identify patients requiring nutrition intervention.

Limitations

Scoring depends on clinical judgment of disease severity and does not replace full nutrition diagnosis.

For related assessments, see MST Score, MUST Score and CONUT.

Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.

Sources

Changelog

April 21, 2026 · trust-baseline
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