Table 1.
ICD-10 (international classification of diseases, 10th revision) codes for 19 infections, covid-19, and comorbidities included in the study
| Diagnosis | ICD-10 codes |
|---|---|
| Infection category | |
| Severe invasive | |
| Sepsis | A40.0, A40.1, A41 |
| Meningitis | A17.0, A17.8, A32.1, A85.1, A86, A87, B00.3, B00.4, B01.0, G01, G00.3, G00.8, G00.9, G02.0, G02.1, G03, G04 |
| Septic arthritis | M00, M46.5 |
| Osteomyelitis | M86 |
| Pyelonephritis | N10, N16.0 |
| Cellulitis | L03 |
| Respiratory | |
| Bronchiolitis | J21.0, J21.1, J21.8, J21.9 |
| Influenza | J10, J11 |
| Croup | J05, J20.9 |
| Pneumonia | J12.0, J12.2, J12.8, J12.9, J13, J14, J15.0, J15.1, J15.2, J15.4, J15.5, J15.6, J15.7, J15.8, J15.9, J16.0, J17, J18, P23 |
| Viral wheeze | R06.2 |
| Upper respiratory tract infection | J06 |
| Otitis media | H65, H66, H67 |
| Tonsilitis | J03, J36 |
| Vaccine preventable | |
| Neisseria meningitidis | A39 |
| Haemophilus influenzae | G00.0, A41.3 |
| Streptococcus pneumoniae | G00.1, A40.3 |
| Measles | B05 |
| Mumps | B26 |
| Comorbidities | |
| Asthma | J45 |
| Bronchopulmonary dysplasia | P27.1 |
| Extreme prematurity (<28 weeks) | P07.2 (or ‘gestat’ 22-27 wks) |
| Cystic fibrosis | E84 |
| Congenital cardiac disease | Q20, Q21, Q24 |
| Bronchiectasis | J47 |
| Immunodeficiency with predominantly antibody defects | D80 |
| Combined immunodeficiencies | D81 |
| Common variable immunodeficiency | D83 |
| Acute lymphoblastic leukaemia | C91.0 |
| Acute myeloid leukaemia | C92.0 |
| Covid-19 | U07.1, U07.2 |