ICD-10 Code L12.1 – Cicatricial pemphigoid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L12.1 – Cicatricial pemphigoid
What it is
Cicatricial pemphigoid is a chronic autoimmune blistering disorder that mainly affects mucous membranes and can leave scarring. Use this code when documentation identifies mucous membrane pemphigoid or cicatricial pemphigoid.
Clinical signs
Typical findings include recurrent blisters, erosions, and inflammation of the mouth, eyes, or other mucosal sites. Scarring may occur; clinical features vary, so refer to documentation.
When to use this code
Use L12.1 when the provider documents cicatricial pemphigoid, mucous membrane pemphigoid, or a related scarring pemphigoid involving mucosal surfaces. Code it from confirmed diagnoses, not from a nonspecific blistering rash alone. Check documentation if the record does not clearly distinguish it from other pemphigoid disorders.
Do not use for
Do not use this code for bullous pemphigoid or other blistering diseases without mucosal scarring. If the diagnosis is uncertain or only suspected, check documentation.
Coding tip
Look for provider wording that links the condition to mucous membranes and scarring before assigning L12.1.