Table 1 International disease classification codes for chronic obstructive pulmonary disease on which patient inclusion will be based.
ICD-10 | ICD-9 | ICPC |
|---|---|---|
J41 Simple and mucopurulent chronic bronchitis | 490 Bronchitis, not specified as acute or chronic | R79 Chronic bronchitis |
J41.0 Simple chronic bronchitis | 491 Chronic bronchitis | |
J41.1 Mucopurulent chronic bronchitis | 491.0 Simple chronic bronchitis | |
J41.8 Mixed simple and mucopurulent chronic bronchitis | 491.1 Mucopurulent chronic bronchitis | |
491.2 Obstructive chronic bronchitis | ||
491.20 Obstructive chronic bronchitis – without exacerbation with the 2004 code modification: Emphysema with chronic bronchitis – without exacerbation | ||
J42 Unspecified chronic bronchitis | 491.9 Unspecified chronic bronchitis | |
J43 Emphysema | 492 Emphysema | |
J43.0 MacLeod's syndrome | 492.0 Emphysematous bleb | |
J43.1 Panlobular emphysema | 492.8 Other emphysema | |
J43.2 Centrilobular emphysema | ||
J43.8 Other emphysema | ||
J43.9 Emphysema, unspecified | ||
J44 Other chronic obstructive pulmonary disease | 491.21 Obstructive chronic bronchitis with acute exacerbation with the 2004 code modifications: | R95 COPD (chronic obstructive pulmonary disease) |
J44.0 Chronic obstructive pulmonary disease with acute lower respiratory infection | Acute bronchitis with chronic obstructive pulmonary disease (COPD) | |
J44.1 Chronic obstructive pulmonary disease with acute exacerbation, unspecified | Acute and chronic obstructive bronchitis | |
J44.8 Other specified chronic obstructive pulmonary disease | Emphysema with acute and chronic bronchitis | |
J44.9 Chronic obstructive pulmonary disease, unspecified | Acute exacerbation of chronic obstructive pulmonary disease (COPD) | |
Excluded: chronic obstructive asthma with acute exacerbation (493.22) | ||
491.8 Other chronic bronchitis | ||
496 Chronic airway obstruction, not elsewhere classified |