ICD-10 Code L01.00 – Impetigo, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L01.00 – Impetigo, unspecified
What it is
L01.00 identifies impetigo when the record does not specify the type or cause. It is a superficial, contagious skin infection most often seen on the face or extremities.
Clinical signs
Typical findings include honey-colored crusts, small blisters, or shallow erosions. Clinical features vary; refer to documentation when the note does not clearly describe the lesion pattern.
When to use this code
Use L01.00 when the provider documents impetigo but does not name a more specific form such as bullous or nonbullous. It also fits when the chart lacks enough detail to assign a more precise code. Code from the documented diagnosis, not from suspected appearance alone.
Do not use for
Do not use this code for cellulitis, eczema, or other non-impetigo skin infections. If the record specifies a different impetigo type, code that more specific diagnosis instead.
Coding tip
If the note only says “skin infection” or “rash,” check documentation before assigning L01.00.