ICD-10 Code L25.8 – Unspecified contact dermatitis due to other agents (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L25.8 – Unspecified contact dermatitis due to other agents
What it is
L25.8 identifies contact dermatitis caused by an external substance, when the specific agent is not named or does not fit a more specific code. Use it for a skin reaction linked to contact exposure, with the cause still unspecified.
Clinical signs
Typical findings include localized redness, itching, swelling, and irritation where the skin touched the offending substance. Clinical features vary; refer to documentation.
When to use this code
Use L25.8 when the record documents contact dermatitis from an external agent but does not identify the exact substance. It also fits when the provider notes a nonspecific or other-agent exposure without a more precise dermatitis code. Check documentation if the allergen or irritant is later clarified.
Do not use for
Do not use this code for dermatitis with a clearly identified specific cause that has its own ICD-10 code. Do not use it when the condition is better described by another dermatitis category or when contact exposure is not documented.
Coding tip
Code the most specific contact dermatitis option available, and default to L25.8 only when the chart supports contact dermatitis but leaves the agent unspecified.