Appendix.

ICD-9-CM codes used for infections of interest and Henoch-Schönlein purpura.

Infection/DiseaseCodeDiagnosis Code Test
Henoch-Schönlein purpura287.0Allergic purpura
Group A ß-hemolytic Streptococcus034.0Streptococcal sore throat
035Erysipelas
038.0Streptococcal septicemia
041.00Streptococcus infection NOS
320.2Streptococcal meningitis
482.31Pneumonia due to Streptococcus, Group A
Methicillin-sensitive S. aureus (MSSA)038.10Staphylococcal septicemia, NOS
038.11MSSA septicemia
041.10Staphylococcus, NOS infection in condition elsewhere classified
041.11MSSA infection in condition elsewhere classified
320.3Staphylococcal meningitis
482.41MSSA pneumonia
695.81Staphylococcal scalded skin syndrome
Methicillin-resistant S. aureus (MRSA)038.12MRSA septicemia
041.12MRSA infection in condition elsewhere classified
482.42MRSA pneumonia
Parainfluenza virus480.2Parainfluenzal pneumonia
Influenza virus487.0Influenza with pneumonia
487.1Influenza with other respiratory manifestations
487.8Influenza with other manifestations
Adenovirus049.1Meningitis due to adenovirus
077.3Acute adenoviral follicular conjunctivitis
079.0Adenovirus infection, NEC
480.0Pneumonia due to adenovirus
008.62Enteritis due to adenovirus
Respiratory syncytial virus (RSV)079.6RSV infection in condition elsewhere classified
480.1Pneumonia due to RSV
466.11Acute bronchiolitis due to RSV