ICD-10 Code J67.0 – Farmer’s Lung (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J67.0 – Farmer’s lung
What it is
J67.0 identifies Farmer’s lung, an allergic lung disease caused by repeated inhalation of organic dust, often from moldy hay or grain. It is a type of hypersensitivity pneumonitis.
Clinical signs
Patients may have cough, shortness of breath, chest tightness, fever, or malaise after exposure to contaminated agricultural material. Clinical features vary; refer to documentation.
When to use this code
Use J67.0 when the record clearly links the respiratory illness to exposure in farming settings, especially moldy hay or similar organic dust. Code the condition when the provider documents Farmer’s lung or hypersensitivity pneumonitis due to agricultural exposure. Check documentation if the exposure source is unclear.
Do not use for
Do not use this code for generic asthma, bronchitis, or pneumonia without a documented hypersensitivity reaction. Do not assign it when the exposure is not farming-related.
Coding tip
Confirm the specific exposure source in the note before assigning J67.0.