ICD-10 Code L25 – Unspecified Contact Dermatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L25 – Unspecified contact dermatitis
What it is
L25 identifies contact dermatitis when the record does not specify the exact cause or type. Use it for skin inflammation linked to contact exposure, when documentation is too limited for a more specific code.
Clinical signs
Typical findings include localized redness, itching, swelling, and irritated or blistered skin at the contact site. Clinical features vary; refer to documentation if the reaction pattern or trigger is unclear.
When to use this code
Use L25 when the provider documents contact dermatitis but does not identify the irritant, allergen, or exact subtype. It also fits when the note says “unspecified” or gives insufficient detail for a more precise contact dermatitis code.
Check documentation before assigning it if the chart names a specific substance, occupational exposure, or allergic mechanism. You should code the most specific documented diagnosis when available.
Do not use for
Do not use L25 for dermatitis with a clearly documented cause that has a more specific code. Do not use it when the record supports another non-contact skin disorder.
Coding tip
Review the assessment and exposure history carefully; if the trigger is named, select a more specific contact dermatitis code instead of L25.