PSI / PORT Pneumonia Severity Index — free guideline decision tool
Pneumonia Severity Index (PSI/PORT), a 20-variable score stratifying community-acquired pneumonia 30-day mortality into classes I–V.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Common questions
What does PSI / PORT Pneumonia Severity Index do?
Use to risk-stratify CAP and inform outpatient vs inpatient disposition, preferred by 2019 ATS/IDSA over CURB-65.
How is the result calculated?
Points from age (minus 10 if female), nursing-home residence, five comorbidities, five exam findings, and seven lab/imaging findings; class I requires age ≤ 50 with no comorbidity/exam abnormality, then II ≤ 70, III 71–90, IV 91–130, V ≥ 131.
Is this a substitute for clinical judgement?
No. All results are decision-support only, for licensed clinicians. They must be individualized to the whole patient and the latest guideline version.
Run PSI / PORT Pneumonia Severity Index now
Pneumonia Severity Index (PSI/PORT), a 20-variable score stratifying community-acquired pneumonia 30-day mortality into classes I–V.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.