ICD-10 Code J66.1 – Flax-dressers’ disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J66.1 – Flax-dressers’ disease
What it is
J66.1 identifies an occupational lung disease caused by exposure to flax dust. It is used when the record documents respiratory illness linked to flax-dressers’ exposure.
Clinical signs
Clinical features vary; refer to documentation. Typical records describe cough, wheeze, shortness of breath, or other evidence of dust-related airway disease after flax exposure.
When to use this code
Use J66.1 when the clinician documents flax-dressers’ disease or a flax-dust–related occupational lung disorder. It may appear in workers with a compatible exposure history and respiratory symptoms. Code it only when the record supports the specific diagnosis.
Do not use for
Do not use this code for nonspecific bronchitis, asthma, or other dust exposures unless flax is identified. Check documentation if the occupational cause is unclear.
Coding tip
Confirm both the occupational exposure and the named diagnosis before assigning J66.1.