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

Chronic lower respiratory diseases
(J40-J47)

Excludes: cystic fibrosis ( E84.- )

J40 Bronchitis, not specified as acute or chronic
Note: Bronchitis not specified as acute or chronic in those under 15 years of age can be assumed to be of acute nature and should be classified to J20.-.
Bronchitis:
· NOS
· catarrhal
· with tracheitis NOS
Tracheobronchitis NOS
Excludes: bronchitis:
· allergic NOS ( J45.0 )
· asthmatic NOS ( J45.9 )
· chemical (acute) ( J68.0 )

J41 Simple and mucopurulent chronic bronchitis
Excludes: chronic bronchitis:
· NOS ( J42 )
· obstructive ( J44.- )
J41.0 Simple chronic bronchitis
J41.1 Mucopurulent chronic bronchitis
J41.8 Mixed simple and mucopurulent chronic bronchitis

J42 Unspecified chronic bronchitis
Chronic:
· bronchitis NOS
· tracheitis
· tracheobronchitis
Excludes: chronic:
· asthmatic bronchitis ( J44.- )
· bronchitis:
  · simple and mucopurulent ( J41.- )
  · with airways obstruction ( J44.- )
· emphysematous bronchitis ( J44.- )
· obstructive pulmonary disease NOS ( J44.9 )

J43 Emphysema
Excludes: emphysema:
· compensatory ( J98.3 )
· due to inhalation of chemicals, gases, fumes or vapours ( J68.4 )
· interstitial ( J98.2 )
  · neonatal ( P25.0 )
· mediastinal ( J98.2 )
· surgical (subcutaneous) ( T81.8 )
· traumatic subcutaneous ( T79.7 )
· with chronic (obstructive) bronchitis ( J44.- )
emphysematous (obstructive) bronchitis ( J44.- )
J43.0 MacLeod's syndrome
Unilateral:
· emphysema
· transparency of lung
J43.1 Panlobular emphysema
Panacinar emphysema
J43.2 Centrilobular emphysema
J43.8 Other emphysema
J43.9 Emphysema, unspecified
Emphysema (lung)(pulmonary):
· NOS
· bullous
· vesicular
Emphysematous bleb

J44 Other chronic obstructive pulmonary disease
Includes: chronic:
· bronchitis:
  · asthmatic (obstructive)
  · emphysematous
  · with:
    · airways obstruction
    · emphysema
· obstructive:
  · asthma
  · bronchitis
  · tracheobronchitis
Excludes: asthma ( J45.-)
asthmatic bronchitis NOS ( J45.9)
bronchiectasis ( J47)
chronic:
· bronchitis:
  · NOS ( J42)
  · simple and mucopurulent ( J41.-)
· tracheitis ( J42)
· tracheobronchitis ( J42)
emphysema ( J43.-)
lung diseases due to external agents ( J60-J70)
J44.0 Chronic obstructive pulmonary disease with acute lower respiratory infection
Excludes: with influenza ( J98-J11)
J44.1 Chronic obstructive pulmonary disease with acute exacerbation, unspecified
#J44.2 Wheezing associated respiratory illness [WARI]
J44.8 Other specified chronic obstructive pulmonary disease
Chronic bronchitis:
· asthmatic (obstructive) NOS
· emphysematous NOS
· obstructive NOS
Excludes: with acute exacerbation ( J44.1)
with acute lower respiratory infection ( J44.0)
J44.9 Chronic obstructive pulmonary disease, unspecified
Chronic obstructive:
· airway disease NOS
· lung disease NOS

J45 Asthma
Excludes: acute severe asthma ( J46)
chronic asthmatic (obstructive) bronchitis ( J44.-)
chronic obstructive asthma ( J44.-)
eosinophilic asthma ( J82)
lung diseases due to external agents ( J60-J70)
status asthmaticus ( J46)
J45.0 Predominantly allergic asthma
Allergic:
· bronchitis NOS
· rhinitis with asthma
Atopic asthma
Extrinsic allergic asthma
Hay fever with asthma
J45.1 Nonallergic asthma
Idiosyncratic asthma
Intrinsic nonallergic asthma
#J45.2 Bronchial hypersensitiveness
J45.8 Mixed asthma
Combination of conditions listed in J45.0 and J45.1
J45.9 Asthma, unspecified
Asthmatic bronchitis NOS
Late-onset asthma

J46 Status asthmaticus
Acute severe asthma

J47

 Bronchiectasis
Bronchiolectasis
Excludes: congenital bronchiectasis ( Q33.4 )
tuberculous bronchiectasis (current disease) ( A15-A16 )