CA23.0

ICD-11 MMS 2026-01

Allergic asthma

Description

Allergic asthma is the most easily recognised asthma phenotype, which often commences in childhood and is associated with a past and/or family history of allergic diseases such as eczema, allergic rhinitis, or food or drug allergy. Examination of the induced sputum of these patients before treatment often reveals eosinophilic airway inflammation. The main trigger is the exposure to inhaled allergens, such as dust mite and pollens, to which the affected individual has previously been sensitized. Patients with this asthma phenotype usually respond well to inhaled corticosteroid (ICS) treatment and specific allergen-immunotherapy.

Index terms

  • Allergic asthma
  • Allergen-induced asthma
  • Allergic bronchitis NOS
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  • Extrinsic allergic asthma
  • Predominantly allergic asthma without stated status asthmaticus
  • allergic asthma without stated status asthmaticus
  • catarrh with asthma
  • extrinsic asthma
  • predominantly allergic asthma
  • Allergic occupational asthma
  • Asthma exacerbated by work
  • Allergic asthmatic rhinitis
  • allergic rhinitis with asthma
  • Allergic atopic asthma
  • atopic asthma
  • Childhood asthma
  • childhood asthmatic
  • childhood bronchial asthma
  • Tree allergy with asthma
  • Pollen allergy with asthma
  • pollen asthma
  • Platinum asthma
  • platinosis
  • Hay fever with asthma
  • hay asthma
  • Grass allergy with asthma
  • Dust allergy with asthma

Exclusions from above levels

  • CA22 – chronic obstructive asthma
  • CA22.1 – chronic asthmatic (obstructive) bronchitis
  • CA60.1 – miner’s asthma
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  • CA70 – wood asthma
  • MD11.C – Wheezing
  • 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

Child codes

  • CA23.00 – Allergic asthma with exacerbation
  • CA23.01 – Allergic asthma with status asthmaticus
  • CA23.02 – Allergic asthma, uncomplicated

Sibling codes

  • CA23.1 – Non-allergic asthma
  • CA23.2 – Other specified forms of asthma or bronchospasm
  • CA23.3 – Unspecified asthma

Foundation entity

Allergic asthma – http://id.who.int/icd/entity/1870104478

Allowed postcoordination axes

Part of: CA23: Asthma › 12: Diseases of the respiratory system