CA23.1

ICD-11 MMS 2026-01

Non-allergic asthma

Description

Non-allergic asthma occurs in some patients who have asthma that is not associated with allergy. The cellular profile of the sputum of these patients may be neutrophilic, eosinophilic or contain only a few inflammatory cells (paucigranulocytic). Patients with non-allergic asthma often respond less well to inhaled corticosteroids. It can cover different phenotypes.

Index terms

  • Non-allergic asthma
  • Non-allergic asthma without stated status asthmaticus
  • intrinsic 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

  • CA23.10 – Non-allergic asthma with exacerbation
  • CA23.11 – Non-allergic asthma with status asthmaticus
  • CA23.12 – Non-allergic asthma, uncomplicated

Sibling codes

  • CA23.0 – Allergic asthma
  • CA23.2 – Other specified forms of asthma or bronchospasm
  • CA23.3 – Unspecified asthma

Foundation entity

Non-allergic asthma – http://id.who.int/icd/entity/1461326813

Allowed postcoordination axes

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