Toxic erythema

This code represents a skin eruption characterized by redness and inflammation, often appearing as a rash, that is caused by exposure to a toxic substance. It is a non-specific reaction of the skin to various external or internal toxins, rather than an allergic reaction or infection.

Use this code when documentation clearly indicates a skin rash or erythema resulting from a toxic exposure, such as contact with irritants, certain medications, or environmental toxins. This diagnosis is appropriate when the etiology is identified as toxic and not allergic or infectious.

• Differentiate from allergic contact dermatitis (e.g., 692.0-692.9) which implies an immune-mediated response.
• Ensure documentation specifies "toxic" as the cause of the erythema; otherwise, a more general code for dermatitis might be appropriate.
• Consider an additional E-code to identify the external cause of poisoning or adverse effect, if known and documented.