J00-J99 Diseases of the respiratory system Notes 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 ). Use Additional 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 ) Type 2 Excludes 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 ) Codes J00-J06 Acute upper respiratory infections J09-J18 Influenza and pneumonia J20-J22 Other acute lower respiratory infections J30-J39 Other diseases of upper respiratory tract J40-J4A Chronic lower respiratory diseases J60-J70 Lung diseases due to external agents J80-J84 Other respiratory diseases principally affecting the interstitium J85-J86 Suppurative and necrotic conditions of the lower respiratory tract J90-J94 Other diseases of the pleura J95-J95 Intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified J96-J99 Other diseases of the respiratory system 