J66

Classification

Category:Diseases of the respiratory system

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Coding Guidance

J66 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.

Excludes 2

From J66

allergic alveolitis

asbestosis

bagassosis

farmer's lung

hypersensitivity pneumonitis due to organic dust

reactive airways dysfunction syndrome

From J00-J99

certain conditions originating in the perinatal period

certain infectious and parasitic diseases

complications of pregnancy, childbirth and the puerperium

congenital malformations, deformations and chromosomal abnormalities

endocrine, nutritional and metabolic diseases

injury, poisoning and certain other consequences of external causes

neoplasms

smoke inhalation

symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Use Additional Code

From J00-J99

exposure to environmental tobacco smoke

exposure to tobacco smoke in the perinatal period

history of tobacco dependence

occupational exposure to environmental tobacco smoke

tobacco dependence

tobacco use

More Specific Codes

J66.0

Byssinosis

J66.1

Flax-dressers' disease

J66.2

Cannabinosis

J66.8

Airway disease due to other specific organic dusts

External Resources

2025 ICD-10 guidelines from CMS.gov