CA40

ICD-11 MMS 2026-01

Pneumonia

Description

A disease of the lungs, frequently but not always caused by an infection with bacteria, virus, fungus, or parasite. This disease is characterised by fever, chills, cough with sputum production, chest pain and shortness of breath. Confirmation is, for example, by chest x-ray.

Inclusions

  • infectious pneumonia

Excludes

  • http://id.who.int/icd/entity/1324545867 – Pneumonitis

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 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

  • CA40.0 – Bacterial pneumonia
  • CA40.1 – Viral pneumonia
  • CA40.2 – Fungal pneumonia
  • CA40.Y – Other specified pneumonia
  • CA40.Z – Pneumonia, organism unspecified

Foundation children elsewhere

  • 1D65 – Severe acute respiratory syndrome
  • 1F57.2 – Pulmonary toxoplasmosis due to Toxoplasma gondii
  • CA43.1 – Abscess of lung with pneumonia
  • KB24 – Congenital pneumonia

Sibling codes

  • CA41 – Acute bronchiolitis
  • CA42 – Acute bronchitis
  • CA43 – Abscess of lung or mediastinum
  • CA44 – Pyothorax
  • CA45 – Respiratory infections, not elsewhere classified
  • CA4Y – Other specified lung infections
  • CA4Z – Lung infections, unspecified

Foundation entity

Pneumonia – http://id.who.int/icd/entity/142052508

Allowed postcoordination axes

Part of: 12: Diseases of the respiratory system