ICD-10 Code L12.31 – Epidermolysis bullosa due to drug (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L12.31 – Epidermolysis bullosa due to drug
What it is
This code identifies epidermolysis bullosa caused by a drug reaction. Use it when the documentation links blistering skin disease to a medication exposure.
Clinical signs
Typical findings include fragile skin, blistering, and erosions after drug use. Clinical features vary; refer to documentation for the specific medication reaction and extent of skin involvement.
When to use this code
Use L12.31 when the provider documents epidermolysis bullosa due to a drug, including cases where the medication is named as the cause. It may apply in adverse drug reaction encounters where the skin condition is the primary diagnosis. If the record only says “blistering rash” without linking it to a drug, check documentation.
Do not use for
Do not use this code for epidermolysis bullosa from inherited causes or when another blistering disorder is documented. Do not assign it if the drug relationship is not stated.
Coding tip
Code the adverse effect only when the provider clearly connects the blistering condition to the medication.