ICD-10 Code J67.2 – Bird fancier’s lung (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J67.2 – Bird fancier’s lung
What it is
Bird fancier’s lung is a hypersensitivity pneumonitis caused by repeated exposure to bird proteins in feathers, droppings, or serum. Use this code when the record identifies bird-related antigen exposure as the cause.
Clinical signs
Typical findings include cough, shortness of breath, and symptoms that worsen after bird exposure. Imaging and pulmonary testing may support the diagnosis; clinical features vary, so refer to documentation.
When to use this code
Use J67.2 when the provider documents bird fancier’s lung, avian antigen hypersensitivity, or hypersensitivity pneumonitis due to birds. It fits confirmed cases tied to pet birds, aviaries, or occupational bird exposure. If the cause is not clearly documented, check documentation before assigning it.
Do not use for
Do not use this code for nonspecific pneumonia, asthma, or lung disease without a documented bird-related hypersensitivity cause. Do not assume the diagnosis from exposure alone.
Coding tip
Link the code to the documented bird exposure and the provider’s final diagnosis, not just respiratory symptoms.