Airway disease due to specific organic dust (J66) ICD-10-CM
The J66 code range covers airway disease due to specific organic dust with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the J66 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the J66 range.
Byssinosis
A condition of BRONCHOCONSTRICTION resulting from hypersensitive reaction to inhaled dust during the initial processing of cotton, flax, or hemp in the textile industry. Symptoms include wheezing and tightness in the chest.
Cannabinosis
A disorder associated with chronic exposure to inhaled dust during the processing of hemp.
Flax-Dressers' Disease
A disorder associated with chronic exposure to inhaled particles of unprocessed flax during processing.
About the J66 Code Range
Specific organic dusts can cause the airway diseases in this category, which sits among lung diseases due to external agents.
The subdivisions name byssinosis (J66.0), flax-dressers' disease (J66.1), and cannabinosis (J66.2). J66.8 groups airway disease due to other specific organic dusts.
Questions About This Page
How many billable codes are in the J66 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the J66 range classify?
The range classifies airway disease due to specific organic dust. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
