ICD-10 Code L12.3 – Acquired epidermolysis bullosa (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L12.3 – Acquired epidermolysis bullosa
What it is
Use this code for acquired epidermolysis bullosa, an autoimmune blistering disorder that causes fragile skin and mucous membranes. It is not the inherited form of epidermolysis bullosa.
Clinical signs
Typical findings include skin blistering, erosions, and scarring, often with mucosal involvement. Clinical features vary; refer to documentation.
When to use this code
Assign L12.3 when the provider documents acquired epidermolysis bullosa or a comparable autoimmune blistering diagnosis. Use it when the record distinguishes the condition from inherited epidermolysis bullosa or another bullous disorder. Check documentation if the exact diagnosis is unclear.
Do not use for
Do not use this code for inherited epidermolysis bullosa or nonspecific blistering without a documented acquired diagnosis. Do not substitute it for other autoimmune bullous diseases unless the record specifically identifies acquired epidermolysis bullosa.
Coding tip
Code only when the provider clearly documents the acquired form; otherwise, query for clarification.