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Taxonomy Codes
Diseases of the respiratory system
Chronic obstructive pulmonary disease and allied conditions (490-496)
491 Chronic bronchitis
491.0
- Simple chr bronchitis
491.1
- Mucopurul chr bronchitis
491.20
- Obst chr bronc w/o exac
491.21
- Obs chr bronc w(ac) exac
491.22
- Obs chr bronc w ac bronc
491.8
- Chronic bronchitis NEC
491.9
- Chronic bronchitis NOS