Eczematous dermatitis of left lower eyelid

This code signifies an inflammatory skin condition affecting the lower eyelid of the left eye, characterized by redness, itching, scaling, and sometimes blistering or weeping. It represents a form of dermatitis specifically localized to the eyelid, often triggered by irritants or allergens.

Apply this code when documentation specifies eczematous inflammation of the left lower eyelid. This includes conditions like allergic contact dermatitis, irritant contact dermatitis, or atopic dermatitis manifesting on this specific anatomical site. Supporting documentation should clearly indicate the laterality and the affected eyelid.

• Ensure documentation specifies "left lower eyelid" to avoid miscoding laterality or eyelid location.
• Distinguish from other inflammatory eyelid conditions like blepharitis (H01.0-) or hordeolum/chalazion (H00.-).
• Consider an additional code for the underlying cause if known, such as an external allergen (e.g., T49.3X5A for ophthalmic preparations causing adverse effects).