Bird Fancier's Lung

**Definition:** A form of alveolitis or pneumonitis due to an acquired hypersensitivity to inhaled avian antigens, usually proteins in the dust of bird feathers and droppings.

**Tree numbers:** - C08.381.483.125.125 - C08.674.055.125 - C20.543.480.680.075.125 - C24.125

**Synonyms:** - Pneumonitis, Hypersensitivity, Avian - Avian Hypersensitivity Pneumonitis - Hypersensitivity Pneumonitis, Avian - Pneumonitis, Avian Hypersensitivity