ICD-10 Code L12.2 – Chronic bullous disease of childhood (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L12.2 – Chronic bullous disease of childhood
What it is
Use this code for chronic bullous disease of childhood, an autoimmune blistering disorder that causes recurring tense blisters in children. It is a specific diagnosis, not a general rash or nonspecific skin eruption.
Clinical signs
Typical findings include tense blisters, often on the skin and sometimes the mouth, with itching or irritation. Clinical features vary; refer to documentation.
When to use this code
Assign L12.2 when the provider documents chronic bullous disease of childhood, childhood bullous pemphigoid, or a clearly equivalent diagnosis. Use it for confirmed or clearly documented cases in a child. Check documentation if the record only says “blisters” or “bullous rash.”
Do not use for
Do not use this code for neonatal blistering disorders, adult bullous pemphigoid, or blistering from infection, burns, or trauma. If the diagnosis is unclear, check documentation.
Coding tip
Code the documented disease name, not the appearance of the lesions alone.