Irritant contact dermatitis due to oils and greases

This code signifies an inflammatory skin reaction resulting from direct contact with irritating oils or greases. It is a non-allergic dermatitis characterized by erythema, edema, vesicles, and pruritus at the site of exposure.

Apply this code when documentation specifies contact dermatitis caused by exposure to substances like industrial lubricants, motor oils, cooking oils, or other fatty substances that directly irritate the skin. Ensure the physician's notes clearly identify the irritant as an oil or grease.

• Differentiate from allergic contact dermatitis (L23.-) where an immune response is involved.
• Always seek documentation specifying the causative agent as an oil or grease, not just a generic chemical.
• Consider an external cause code (e.g., W57.XXXA for exposure to animal venom, or Y92.- for place of occurrence) if the context provides additional detail.