Pneumonitis due to inhalation of oils and essences

This diagnosis code signifies an inflammatory reaction in the lungs resulting from the aspiration or inhalation of oily substances or essential oils. This condition is a form of chemical pneumonitis, where the foreign material triggers an immune response and tissue damage within the pulmonary system.

Apply this code when documentation clearly indicates lung inflammation caused by the inhalation of oils, such as mineral oil, petroleum jelly, or various essential oils. This often occurs in patients who aspirate these substances, either intentionally or accidentally, or through prolonged exposure to oil mists. Supporting documentation should specify the inhaled substance as an oil or essence and link it directly to the pneumonitis.

• Differentiate carefully from aspiration pneumonitis due to food or gastric contents, which would be coded differently.
• Ensure the documentation explicitly states "inhalation of oils" or "aspiration of oils/essences" to support this specific code.
• Remember the Excludes1 note: never code this with endogenous lipoid pneumonia (J84.89), which is caused by lipids originating within the body.