ICD-10 Code L25.3 – Unspecified Contact Dermatitis Due to Other Chemical Products (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L25.3 – Unspecified contact dermatitis due to other chemical products
What it is
L25.3 identifies contact dermatitis caused by a chemical product when the exact substance or more specific dermatitis type is not documented. Use it for a skin reaction linked to chemical exposure, but not to a named allergen or irritant.
Clinical signs
Typical findings include localized redness, itching, burning, swelling, or rash at the exposure site. Clinical features vary; refer to documentation for the specific chemical, distribution, and whether the reaction is allergic or irritant.
When to use this code
Use this code when the record states contact dermatitis from a chemical product, but the chart does not identify the exact agent. It also fits when the clinician documents a chemical-related dermatitis without specifying allergic versus irritant. If the substance is known, code more specifically when documentation supports it.
Do not use for
Do not use L25.3 for dermatitis from plants, metals, cosmetics, or other clearly identified allergens when a more specific code exists. Check documentation if the note describes eczema, infection, or a non-contact rash instead.
Coding tip
Code the documented exposure and dermatitis type first; if the chemical is unspecified, L25.3 is appropriate.