Home & Calculator


CURB-65 Pneumonia Severity Score

(defined as an Abbreviated Mental Test score (AMT) of 8 or less, or new disorientation in person, place or time).

Urea >7 mmol/L (for patients being seen in hospital)

Respiratory rate >= 30/minute

Blood pressure
(systolic BP < 90 mmHg or diastolic BP <= 60 mmHg)

Age >= 65 years



CURB-65 score for stratification of CAP patients (30-day mortality)

  • 0–1: Mortality low (1.5%). Likely suitable for home treatment.
  • 2: Mortality intermediate (9.2%). Consider hospital supervised treatment. (Options may include (a) short stay inpatient; (b) hospital supervised outpatient.)
  • >= 3: Mortality high (22%). Manage in hospital as severe pneumonia. (Assess for ICU admission especially if CURB-65 score = 4 or 5.)