ICD-11 classes
12 Diseases of the respiratory system
Certain lower respiratory tract diseases
CA22 — Chronic obstructive pulmonary disease

ICD-11 CA22 — Chronic obstructive pulmonary disease

Chronic Obstructive Pulmonary disease (COPD), a common preventable and treatable disease, is characterised by persistent airflow limitation that is usually progressive and associated with an enhanced chronic inflammatory response in the airways and the lung to noxious particles or gases. Exacerbations and comorbidities contribute to the overall severity in individual patients.

The diagnosis includes nothing.

It excludes 8 items.

  • Emphysema (CA21)
  • chronic tracheobronchitis (CA20.1)
  • chronic tracheitis (CA20.1)
  • Simple or mucopurulent chronic bronchitis (CA20.1)
  • asthmatic bronchitis NOS (CA23.3)
  • Bronchiectasis (CA24)
  • Asthma (CA23)
  • chronic bronchitis NOS (CA20.1)

Diagnosis with code CA22 contains 3 clarifying diagnoses:

  1. CA22.0 — Chronic obstructive pulmonary disease with acute exacerbation, unspecified
  2. CA22.1 — Certain specified chronic obstructive pulmonary disease
  3. CA22.Z — Chronic obstructive pulmonary disease, unspecified

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