Allergic dermatitis of right lower eyelid

This code signifies an inflammatory reaction of the skin on the right lower eyelid caused by exposure to an allergen. This condition typically presents with redness, itching, swelling, and sometimes scaling or blistering of the affected eyelid.

Apply this code when documentation clearly indicates allergic dermatitis affecting the right lower eyelid. This diagnosis is often made based on patient history of allergen exposure and characteristic clinical signs. Supporting documentation should specify the laterality and the allergic etiology.

• Ensure documentation specifies "allergic" dermatitis to differentiate from irritant contact dermatitis.
• Verify laterality (right lower eyelid) is clearly stated; do not assume.
• Consider an additional code from T78.- category if the specific allergen is identified and documented.