Allergic contact dermatitis due to other chemical products

This code signifies an inflammatory skin reaction resulting from direct skin contact with a chemical substance, excluding those specifically categorized elsewhere (e.g., cosmetics, drugs, dyes). The dermatitis is characterized by erythema, edema, papules, vesicles, and pruritus, appearing at the site of exposure. It represents a delayed-type hypersensitivity response.

Apply this code when documentation clearly identifies allergic contact dermatitis caused by a chemical product not otherwise specified, such as industrial chemicals, cleaning agents, or certain preservatives. Supporting documentation should detail the causative agent and confirm the allergic nature of the reaction.

• Ensure the documentation specifies "allergic" contact dermatitis, not irritant contact dermatitis.
• Avoid using this code if a more specific chemical product (e.g., cosmetics, drugs, metals) is identified; refer to other L23.x codes.
• Always sequence this code first when it represents the primary reason for the encounter, followed by codes for specific symptoms or complications if applicable.