CURB-65 Severity Score

Estimates mortality of community-acquired pneumonia to help determine inpatient vs. outpatient treatment.


BUN > 19 mg/dL (> 7 mmol/L)

Respiratory Rate ≥ 30

Systolic BP < 90 mmHg or Diastolic BP ≤ 60 mmHg

Age ≥ 65


Source: W Lim, M M van der Eerden, R Laing, W Boersma, N Karalus, G Town, S Lewis, and J Macfarlane. Defining community acquired pneumonia severity on presentation to hospital: an international derivation and validation study. Thorax. 2003 May; 58(5): 377–382. doi: 10.1136/thorax.58.5.377.