J44.0

to identify the infection

asthma with chronic obstructive pulmonary disease chronic asthmatic (obstructive) bronchitis chronic bronchitis with airway obstruction chronic bronchitis with emphysema chronic emphysematous bronchitis chronic obstructive asthma chronic obstructive bronchitis chronic obstructive tracheobronchitis

bronchiectasis (J47.-) chronic bronchitis NOS (J42) chronic simple and mucopurulent bronchitis (J41.-) chronic tracheitis (J42) chronic tracheobronchitis (J42) emphysema without chronic bronchitis (J43.-)

type of asthma, if applicable (J45.-)

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

cystic fibrosis (E84.-)

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) smoke inhalation (T59.81-) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

code, where applicable, 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)

When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).