ICD-10 Code L14 – Bullous disorders in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L14 – Bullous disorders in diseases classified elsewhere
What it is
L14 is used for bullous skin disorders that are caused by, or occur with, another underlying disease. You code the blistering condition here when the documentation links it to another classified condition.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include tense or fragile blisters, erosions, and painful or itchy skin lesions, with the underlying disease identified in the record.
When to use this code
Use L14 when the provider documents a bullous disorder as secondary to another disease and does not assign a more specific code. This is common when the blistering is clearly attributed to a separate condition. Confirm the underlying diagnosis and sequence codes as documented.
Do not use for
Do not use L14 for bullous disorders that are coded elsewhere in ICD-10-CM or when the record does not link the blistering to another disease. Check documentation if the cause is unclear.
Coding tip
Always code the underlying disease first when supported, and use L14 only for the associated bullous disorder.