Unspecified chronic bronchitis

**Inclusion terms:** - Chronic bronchitis NOS - Chronic tracheitis - Chronic tracheobronchitis

**Excludes1:** - bronchiolitis obliterans and bronchiolitis obliterans syndrome (J44.81) - chronic asthmatic bronchitis (J44.-) - chronic bronchitis with airways obstruction (J44.-) - chronic emphysematous bronchitis (J44.-) - chronic obstructive pulmonary disease NOS (J44.9) - simple and mucopurulent chronic bronchitis (J41.-)

**Use additional code:** - code to identify: - exposure to environmental tobacco smoke (Z77.22) - exposure to tobacco smoke in the perinatal period (P96.81) - history of tobacco dependence (Z87.891) - occupational exposure to environmental tobacco smoke (Z57.31) - tobacco dependence (F17.-) - tobacco use (Z72.0)