Asthma

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Asthma is a chronic inflammatory disorder of the airways in which many cells and cellular elements play a role. It is characterised by an increased responsiveness of the trachea and bronchi to various stimuli and manifested by a widespread narrowing of the airways that change in severity either spontaneously or as a result of therapy. This leads to recurrent episodes of wheezing, breathlessness, chest tightness, and coughing, particularly at night or in the early morning.

exclusions

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

sections/codes in this section (CA23-CA23)

• Allergic asthma  (CA23.0)
• Non-allergic asthma  (CA23.1)
• Other specified forms of asthma or bronchospasm  (CA23.2)
• Unspecified asthma  (CA23.3)

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