ICD-10 Code L10.89 – Other pemphigus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L10.89 – Other pemphigus
What it is
Use this code for pemphigus that is documented but does not fit a more specific pemphigus subtype. It identifies an autoimmune blistering disorder of the skin or mucous membranes.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include flaccid blisters, erosions, and fragile skin or mucosal lesions consistent with pemphigus.
When to use this code
Use L10.89 when the provider documents “other pemphigus,” an unspecified pemphigus variant, or a pemphigus presentation not classified elsewhere. Code it when the record supports pemphigus but does not name pemphigus vulgaris, foliaceus, or another specific type. Check documentation if the subtype is unclear.
Do not use for
Do not use this code if the chart identifies a more specific pemphigus type or another blistering disorder. Do not use it when the diagnosis is only suspected or not confirmed.
Coding tip
Match the exact pemphigus wording in the provider note before assigning L10.89.