ICD-10 Code L01.03 – Bullous Impetigo (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L01.03 – Bullous impetigo
What it is
Bullous impetigo is a superficial bacterial skin infection that causes fragile fluid-filled blisters. It is usually coded when documentation specifically identifies this impetigo subtype.
Clinical signs
Look for flaccid bullae that rupture easily and leave shallow erosions or a collarette of scale. Clinical features vary; refer to documentation.
When to use this code
Use L01.03 when the provider documents bullous impetigo, including cases described as blistering impetigo. Code it when the diagnosis is confirmed in the record, even if the note also mentions localized skin infection. If the subtype is not stated, check documentation.
Do not use for
Do not use this code for nonbullous impetigo, other blistering disorders, or skin lesions without a documented diagnosis. Check documentation if the cause is unclear.
Coding tip
Code the specific impetigo type only when the chart names it; otherwise, verify whether a different skin infection code is more appropriate.