Table 1 Percentage of diseases of the respiratory system hospital admission from the total number of admissions per ICD code during the study period

J00-J06

Acute upper respiratory infections

J09-J18

Influenza and pneumonia

J20-J22

Other acute lower respiratory infections (Acute bronchitis, Acute bronchiolitis, and Unspecified acute lower respiratory infection)

J30-J39

Other diseases of upper respiratory tract (Vasomotor and allergic rhinitis, Chronic rhinitis, nasopharyngitis and pharyngitis, Chronic sinusitis, Nasal polyp, Other and unspecified disorders of nose and nasal sinuses, Chronic diseases of tonsils and adenoids, Peritonsillar abscess, Chronic laryngitis and laryngotracheitis, Diseases of vocal cords and larynx, not elsewhere classified, and Other diseases of upper respiratory tract))

J40-J47

Chronic lower respiratory diseases

J60-J70

Lung diseases due to external agents

J80-J84

Other respiratory diseases principally affecting the interstitium (Acute respiratory distress syndrome, Pulmonary edema, Pulmonary eosinophilia, not elsewhere classified, and Other interstitial pulmonary diseases)

J85-J86

Suppurative and necrotic conditions of the lower respiratory tract

J90-J94

Other diseases of the pleura (Pleural effusion, not elsewhere classified, Pleural effusion in conditions classified elsewhere, Pleural plaque, Pneumothorax and air leak, and Other pleural conditions))

J95-J95

Intraoperative and postprocedural complications and disorders of respiratory system, not elsewhere classified

J96-J99

Other diseases of the respiratory system (Acute respiratory distress syndrome, Pulmonary edema, Pulmonary eosinophilia, not elsewhere classified, and Other interstitial pulmonary diseases)