ICD-10 Code J66 – Airway disease due to specific organic dust (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J66 – Airway disease due to specific organic dust
What it is
J66 identifies airway disease caused by exposure to certain organic dusts, such as dust from plant or animal sources. Use it when the record links the airway condition directly to that specific exposure.
Clinical signs
Clinical features vary; refer to documentation. Records may describe cough, wheeze, or other obstructive airway findings after exposure to the relevant organic dust.
When to use this code
Use J66 when the clinician documents airway disease attributed to a specific organic dust exposure and the causal link is clear. It may apply in occupational or environmental exposure notes. Confirm the dust source is specified in the chart.
Do not use for
Do not use this code for general asthma, bronchitis, or airway disease without a documented organic dust cause. Check documentation if the exposure is nonspecific or if another diagnosis better explains the condition.
Coding tip
Verify both the airway diagnosis and the named organic dust exposure before assigning J66.