CA40.0

ICD-11 MMS 2026-01

Bacterial pneumonia

Description

A disease of the pulmonary system, caused by an infection with a bacterial source. This disease is characterised by fever, lethargy, headache, myalgia, vomiting, or coughing. Transmission is by inhalation of infected respiratory secretions. Confirmation is by identification of the bacterial source in a sputum sample.

Inclusions

  • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae

Excludes

  • 1C19 – Legionellosis
  • KB24 – Congenital pneumonia

Exclusions from above levels

  • http://id.who.int/icd/entity/1324545867 – Pneumonitis
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • CA40.00 – Pneumonia due to Chlamydophila pneumoniae
  • CA40.01 – Pneumonia due to Escherichia coli
  • CA40.02 – Pneumonia due to Haemophilus influenzae
  • CA40.03 – Pneumonia due to Klebsiella pneumoniae
  • CA40.04 – Pneumonia due to Mycoplasma pneumoniae
  • CA40.05 – Pneumonia due to Pseudomonas aeruginosa
  • CA40.06 – Pneumonia due to Staphylococcus
  • CA40.07 – Pneumonia due to Streptococcus pneumoniae
  • CA40.08 – Pneumonia due to beta-haemolytic Streptococcus
  • CA40.0Y – Pneumonia due to other specified bacteria
  • CA40.0Z – Bacterial pneumonia, unspecified

Foundation children elsewhere

  • 1C10.0 – Pulmonary actinomycosis
  • 1C19.1 – Legionnaires disease
  • 1C1B.0 – Pulmonary nocardiosis

Sibling codes

  • CA40.1 – Viral pneumonia
  • CA40.2 – Fungal pneumonia
  • CA40.Y – Other specified pneumonia
  • CA40.Z – Pneumonia, organism unspecified

Foundation entity

Bacterial pneumonia – http://id.who.int/icd/entity/1323682030

Allowed postcoordination axes

Part of: CA40: Pneumonia › 12: Diseases of the respiratory system