ICD-10 Code L10.5 – Drug-induced pemphigus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L10.5 – Drug-induced pemphigus
What it is
L10.5 identifies pemphigus caused by a medication. Use it when the record shows autoimmune blistering disease linked to drug exposure.
Clinical signs
Typical findings include fragile blisters, erosions, and mucosal involvement. Clinical features vary; refer to documentation for the suspected drug relationship and confirmed pemphigus diagnosis.
When to use this code
Use L10.5 when the clinician documents drug-induced pemphigus, medication-related pemphigus, or a confirmed adverse drug reaction causing pemphigus. Code it only when the chart clearly links the condition to a drug exposure. Check documentation if the cause is not stated.
Do not use for
Do not use this code for other pemphigus types without a drug cause, or for nonspecific blistering disorders. If the record only says “rash” or “blisters,” you need more specific documentation.
Coding tip
Look for explicit provider wording connecting pemphigus to a medication before assigning L10.5.