ICD-10 Code J68 – Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J68 – Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors
What it is
J68 identifies respiratory illness caused by breathing in harmful chemicals, gases, fumes, or vapors. Use it when the condition is directly linked to an inhalation exposure, not to infection or chronic lung disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include cough, wheezing, shortness of breath, chest irritation, or acute airway inflammation after exposure.
When to use this code
Use J68 when the provider documents a respiratory condition due to inhaled irritants such as chemical fumes or toxic vapors. It may apply after workplace, household, or accidental exposure if the respiratory diagnosis is clearly attributed to that exposure.
Code the documented respiratory effect, such as chemical pneumonitis or bronchitis, when supported by the record. If the exposure is noted but causation is not stated, check documentation.
Do not use for
Do not use this code for routine asthma, pneumonia, or chronic obstructive lung disease unless the record specifically links them to inhalation exposure. Do not use it when the diagnosis is only suspected.
Coding tip
Match J68 to the exact inhaled substance and documented respiratory condition; if the cause is unclear, query the provider.