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Table 1 Definition of hospitalization outcomes expressed in ICD9 codes

From: Estimates of hospitalization attributable to influenza and RSV in the US during 1997–2009, by age and risk status

Outcome

ICD9 codes

Pneumonia and influenza

480-488

Respiratory broad

460-519, 079, 786.0-786.4, 786.7-786.9

Respiratory

460-519

Cardiorespiratory disease

390-519

Sepsis

038, 771.81

  1. ICD International Classification of Diseases