ICD-11 classes
12 Diseases of the respiratory system
Lung infections
CA40 — Pneumonia

ICD-11 CA40 — Pneumonia

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 by chest x-ray.

Diagnosis with code CA40 contains 9 clarifying diagnoses:

1. CA40.0 — Bacterial pneumonia
   It contains 13 clarifying diagnoses.
2. CA40.1 — Viral pneumonia
   It contains 6 clarifying diagnoses.
3. CA40.2 — Fungal pneumonia
   It contains 8 clarifying diagnoses.
4. 1F57.2 — Pulmonary toxoplasmosis due to Toxoplasma gondii
5. 1D65 — Severe acute respiratory syndrome
6. KB24 — Congenital pneumonia
7. CA43.1 — Abscess of lung with pneumonia
8. CA40.Y — Other specified pneumonia
9. CA40.Z — Pneumonia, organism unspecified

The diagnosis is coded elsewhere:

• 01 Certain infectious or parasitic diseases #1
• Pneumonia #1451