506: Respiratory conditions due to chemical fumes and vapors
Use additional code to identify associated respiratory conditions, such as:
acute respiratory failure (518.81)
Use additional E code to identify cause
506.4 Chronic respiratory conditions due to fumes and vapors
Emphysema (diffuse) (chronic) due to inhalation of chemical fumes and vapors
Obliterative bronchiolitis (chronic) (subacute) due to inhalation of chemical fumes and vapors
Pulmonary fibrosis (chronic) due to inhalation of chemical fumes and vapors

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