Chronic respiratory conditions due to fumes and vapors

This code signifies persistent or long-standing respiratory illnesses resulting from prolonged exposure to inhaled noxious fumes or vapors. It encompasses conditions like chronic bronchitis, asthma, or other obstructive lung diseases directly attributable to such environmental or occupational exposures.

Apply this code when documentation clearly links a chronic respiratory condition to a history of exposure to fumes or vapors, often in occupational settings. Supporting documentation should include a definitive diagnosis of a chronic respiratory disease and a clear etiology linking it to specific inhaled irritants.

• Ensure the documentation specifies "chronic" to differentiate from acute exposures.
• Do not use for respiratory conditions due to dusts or other particulate matter; those have separate codes.
• Always sequence this code after the specific chronic respiratory condition (e.g., chronic obstructive pulmonary disease, asthma) if applicable.