J67.2: Bird fancier lung

Bird fancier's lung, classified under ICD-10 code J67.2, is a type of hypersensitivity pneumonitis, an inflammation of the lungs due to an allergic response to inhaled organic dusts. In the context of bird fancier's lung, the dust usually contains proteins found in the feathers or droppings of many species of birds. The condition is typically seen in people who own birds and are frequently exposed to these allergens. Symptoms may include a dry cough, breathlessness, occasional fever, and a general feeling of ill health or fatigue. These symptoms may appear anywhere from a few hours to several days following exposure to the allergens. The disease can progress from an acute condition to a more chronic one if exposure to the triggering allergens is not reduced or eliminated, leading to permanent scarring, or fibrosis, of the lung tissue.