ICD-10 Code L23.0 – Allergic contact dermatitis due to metals (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L23.0 – Allergic contact dermatitis due to metals
What it is
L23.0 identifies allergic contact dermatitis caused by exposure to metals, such as jewelry or metal-containing objects. Use it when the record shows a delayed skin allergy rather than simple irritation.
Clinical signs
Typical findings include pruritic, erythematous, eczematous rash at the contact site, sometimes with vesicles or scaling. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents allergic contact dermatitis from a specific metal exposure, such as nickel in earrings, belt buckles, or watchbands. It also fits reactions linked to other metal items if the diagnosis is clearly stated. Check documentation if the metal trigger is not named.
Do not use for
Do not use L23.0 for irritant contact dermatitis, unspecified dermatitis, or generalized eczema without a documented metal allergy. Check documentation if the cause is uncertain.
Coding tip
Capture the specific metal and exposure source whenever the note supports it.