Chapter X
Diseases of the respiratory system
(J00-J99)

Other acute lower respiratory infections
(J20-J22)

Excludes: chronic obstructive pulmonary disease with acute:
· exacerbation NOS ( J44.1 )
· lower respiratory infection ( J44.0 )

J20 Acute bronchitis
Includes: bronchitis:
· NOS, in those under l5 years of age
· acute and subacute (with):
  · bronchospasm
  · fibrinous
  · membranous
  · purulent
  · septic
  · tracheitis
tracheobronchitis, acute
Excludes: bronchitis:
· NOS, in those 15 years of age and above ( J40 )
· allergic NOS ( J45.0 )
· chronic:
  · NOS ( J42 )
  · mucopurulent ( J41.1 )
  · obstructive ( J44.- )
  · simple ( J41.0 )
tracheobronchitis:
· NOS ( J40 )
· chronic ( J42 )
· chronic obstructive ( J44.- )
J20.0 Acute bronchitis due to Mycoplasma pneumoniae
J20.1 Acute bronchitis due to Haemophilus influenzae
J20.2 Acute bronchitis due to streptococcus
J20.3 Acute bronchitis due to coxsackievirus
J20.4 Acute bronchitis due to parainfluenza virus
J20.5 Acute bronchitis due to respiratory syncytial virus
J20.6 Acute bronchitis due to rhinovirus
J20.7 Acute bronchitis due to echovirus
J20.8 Acute bronchitis due to other specified organisms
J20.9 Acute bronchitis, unspecified

J21 Acute bronchiolitis
Includes: with bronchospasm
J21.0 Acute bronchiolitis due to respiratory syncytial virus
J21.8 Acute bronchiolitis due to other specified organisms
J21.9 Acute bronchiolitis, unspecified
Bronchiolitis (acute)

J22 Unspecified acute lower respiratory infection
Acute (lower) respiratory (tract) infection NOS
Excludes: upper respiratory infection (acute) ( J06.9 )