Certain lower respiratory tract diseases

Definition

This group refers to diseases of airways that forms the connection between the outside world and the terminal respiratory unit. Intrapulmonary airways are divided into three major groups; bronchi, membranous bronchiole, and respiratory bronchiole/gas exchange ducts.

10 subordinate codes

• CA20Bronchitis
• CA21Emphysema
• CA22Chronic obstructive pulmonary disease
• CA23Asthma
• CA24Bronchiectasis
• CA25Cystic fibrosis
• CA26Chronic bronchiolitis
• CA27Tracheobronchitis
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified

Nearby in Diseases of the respiratory system

• CA00-CA0ZUpper respiratory tract disorders
• CA40-CA4ZLung infections
• CA60-CA8ZLung diseases due to external agents
• CB00-CB0ZRespiratory diseases principally affecting the lung interstitium
• CB20-CB2ZPleural, diaphragm or mediastinal disorders
• CB40Certain diseases of the respiratory system
• CB41Respiratory failure
• CB60-CB64Postprocedural disorders of the respiratory system