CURB-65 Pneumonia Severity

A clinical score for community-acquired pneumonia severity and where to treat it.

✓ Reviewed by Dr. Poonam Sekhon Chahal · 24 May 2026
Designed for healthcare professionals or trained caregivers — not for self-diagnosis. If you have symptoms, seek medical care.

How this is calculated

One point each for Confusion, Urea > 7 mmol/L (BUN > 19 mg/dL), Respiratory rate ≥ 30, low Blood pressure (SBP < 90 or DBP ≤ 60), and age ≥ 65.

Sources

  1. Lim WS, et al. Defining community acquired pneumonia severity on presentation to hospital. Thorax 2003.
This calculator is for educational purposes and is not a substitute for professional medical advice, diagnosis, or treatment. The result is based on standard clinical formulas applied to the values you entered — your individual situation may need adjustments your doctor can make. Never disregard professional medical advice or delay seeking it because of something you read or calculated on healthcalculus.