CA22
category
Chronic obstructive pulmonary disease
Definition
Classification of severity of airflow limitation in COPD (based on post-bronchodilator FEV1 (Forced Expiratory Volume in 1 second)) GOLD 1: Mild FEV1 greater than or equal to 80% predicted GOLD 2: Moderate 50% equal to or less than FEV1 greater than 80% predicted GOLD 3: Severe 30% equal to or less than FEV1 greater than 50% predicted GOLD 4: Very Severe FEV1 less than 30% predicted
Exclusions
- Asthma
(CA23) - Bronchiectasis
(CA24) - Emphysema
(CA21) - Simple or mucopurulent chronic bronchitis
(4B4Z) - asthmatic bronchitis NOS
(CA23.3) - chronic bronchitis NOS
(CA20.1) - chronic tracheitis
(CA20.1) - chronic tracheobronchitis
(CA20.1)