Primary Care

CRB-65 Score

Community pneumonia severity (no bloods needed).

Education and reference only. Not a substitute for clinical judgement, local policy or product labelling. Always verify before clinical use. Values are calculated in your browser and never stored.

When to use

Use in the community to assess pneumonia severity and guide hospital referral when blood tests (urea) are not available.

Why use

It risk-stratifies pneumonia using only bedside findings.

Advice

In hospital, CURB-65 (which adds urea) is preferred. Use with clinical judgement and local guidance.

Evidence & references

  1. Lim WS et al. Defining community acquired pneumonia severity on presentation to hospital. Thorax. 2003.

Related calculators

CURB-65 ScoreSeverity and mortality risk in community-acquired pneumonia.mMRC Dyspnoea ScaleBreathlessness severity in COPD.

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