ICD-10 Code L20.82 – Flexural eczema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L20.82 – Flexural eczema
What it is
Flexural eczema is a form of atopic dermatitis that affects skin folds, such as the elbows, knees, neck, or behind the knees. Use this code when documentation specifically identifies eczema in flexural areas.
Clinical signs
Typical findings include itchy, inflamed, dry, or thickened skin in flexural regions. Clinical features vary; refer to documentation for the exact site, severity, and whether the condition is acute or chronic.
When to use this code
Use L20.82 when the provider documents flexural eczema, flexural atopic dermatitis, or eczema limited to skin folds. It is appropriate when the record clearly links the dermatitis to flexural areas rather than describing a broader atopic dermatitis diagnosis. Check documentation if the site is not specified.
Do not use for
Do not use this code for dermatitis in non-flexural locations, unspecified eczema, or skin irritation without a documented eczema diagnosis. If the record only says “atopic dermatitis” without flexural involvement, verify the correct code.
Coding tip
Code the documented anatomic site and avoid assuming flexural involvement unless the provider states it.