Irritant contact dermatitis due to food in contact with skin

This code signifies an inflammatory skin reaction resulting from direct contact with food substances, where the food acts as an irritant rather than an allergen. The dermatitis is characterized by symptoms such as redness, itching, burning, and sometimes blistering, localized to the area of skin exposure. It is a non-allergic response, meaning the immune system is not primarily involved.

Use this code when documentation clearly indicates skin inflammation caused by direct contact with food, and the reaction is identified as irritant contact dermatitis. This typically occurs when food acids, enzymes, or other chemicals in food directly damage the skin barrier. Supporting documentation should specify the food item involved and confirm the irritant nature of the reaction, often by ruling out allergic mechanisms.

• Differentiate carefully between irritant contact dermatitis and allergic contact dermatitis due to food; the latter would be coded differently.
• Ensure documentation specifies "irritant" and "contact" to justify using this code, as opposed to systemic reactions from ingested food.
• Do not use this code if the dermatitis is a systemic reaction from ingested food; refer to the Excludes2 note for appropriate coding in such cases.