EBMcalc Medical Calculator

Community-acquired pneumonia severity index (PSI) for adults

Total Criteria Point Count:

Pneumonia score interpretation

Class I 0.1% mortality

0 to 70 Points:

Class II 0.6% mortality

71 to 90 Points:

Class III 0.9% mortality

91 to 130 Points:

Class IV 9.3% mortality

131 to 405 Points:

Class V 27.0% mortality

Data action

Include literature references: Yes No

Notes

For a patient under the age of 51 years, with no comorbidities or abnormal physical findings listed above, the PSI algorithm assigns a Class of I.

References

Fine MJ, Auble TE, Yealy DM, et al. A prediction rule to identify low-risk patients with community-acquired pneumonia. N Engl J Med. 1997; 336:243-250. PubMed ID: 8995086

Associated Medical Subject Headings [MeSH]

Adult, Age Factors, Aged, Cohort Studies, Community-Acquired Infections, Decision Support Techniques, Female, Hospitalization, Humans, Male, Middle Aged, Pneumonia, Prognosis, ROC Curve, Risk Factors, Severity of Illness Index

Associated HCC ICD10-CM codes

J13

Pneumonia due to strep pneumoniae

J15.0

Pneumonia due to Klebsiella pneumoniae

J15.1

Pneumonia due to Pseudomonas

J15.212

Pneumonia due to MRSA

J18.1

Lobar pneumonia unspecified

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