
Extrinsic allergic alveolitis
- conditions in which inhalation of organic dusts results in hypersensitivity reactions at the alveolar level, associated with the production of precipitins.

Farmers' lung
- systemic and pulmonary reactions resulting from inhalation of dust from moldy hay, threshing dust, or moldy straw, by persons who have become hypersensitive to antigens in the dust; most often associated with inhalation of spores of Micromonospora faeni or Thermoactinomyces vulgaris.

Bagassosis

Bird-fanciers' lung

Suberosis

Malt workers' lung

Mushroom workers' lung

Maple bark-strippers' lung

'ventilation' pneumonitis

Other specified allergic alveolitis and pneumonitis

Unspecified allergic alveolitis and pneumonitis
- conditions in which inhalation of organic dusts results in hypersensitivity reactions at the alveolar level, associated with the production of precipitins.