CA22.0

ICD-11 MMS 2026-01

Chronic obstructive pulmonary disease with acute exacerbation, unspecified

Description

An acute unspecified exacerbation of COPD is an acute event characterised by a worsening of the patient’s respiratory symptoms that is beyond normal day-to-day variations and leads to a change in medication. Exacerbations of COPD can be precipitated by several factors. The diagnosis of an exacerbation relies exclusively on the clinical presentation of the patient complaining of an acute change of symptoms (baseline dyspnoea, cough, and/or sputum production) that is beyond normal day-to-day variation.

Index terms

  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified
  • AECOPD – [acute exacerbation of chronic obstructive pulmonary disease]
  • acute exacerbation COPD
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  • exacerbation COPD NOS
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, very severe airflow limitation
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, FEV1 less than 30% predicted
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, Gold 4
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, severe airflow limitation
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, 30% equal to or less than FEV1 less than 50% predicted
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, Gold 3
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, moderate airflow limitation
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, 50% equal to or less than FEV1 less than 80% predicted
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, Gold 2
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, mild airflow limitation
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, FEV1 greater than or equal to 80% predicted
  • Chronic obstructive pulmonary disease with acute exacerbation, unspecified, Gold 1

Exclusions from above levels

  • CA20.1 – chronic tracheobronchitis
  • CA20.1Z – Simple or mucopurulent chronic bronchitis
  • CA21 – Emphysema
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  • CA23 – Asthma
  • CA23.3 – asthmatic bronchitis NOS
  • CA24 – Bronchiectasis
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 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

Sibling codes

  • CA22.1 – Certain specified chronic obstructive pulmonary disease
  • CA22.Z – Chronic obstructive pulmonary disease, unspecified

Foundation entity

Chronic obstructive pulmonary disease with acute exacerbation, unspecified – http://id.who.int/icd/entity/1665365733

Allowed postcoordination axes

Part of: CA22: Chronic obstructive pulmonary disease › 12: Diseases of the respiratory system