J66
Airway disease due to specific organic dust
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
J66 is a non-billable ICD-10-CM code category for airway disease due to specific organic dust. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are J66.0 Byssinosis, J66.1 Flax-dressers' disease, J66.2 Cannabinosis and J66.8 Airway disease due to other specific organic dusts. Its coding notes include a Use additional code instruction and 17 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (7 notes)
Inherited from Chapter 10 Diseases of the respiratory system
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
This code
Also from chapter/block level (11 notes)
Inherited from J60–J70 Lung diseases due to external agents
Inherited from Chapter 10 Diseases of the respiratory system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
Also from chapter/block level (1 note)
Inherited from Chapter 10 Diseases of the respiratory system
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).