ICD-10 Code L01.0 – Impetigo (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L01.0 – Impetigo
What it is
Impetigo is a superficial bacterial skin infection that commonly affects children but can occur at any age. It usually involves the outer skin layers and is often contagious.
Clinical signs
You may see honey-colored crusts, small blisters, or erosions on exposed skin. Clinical features vary; refer to documentation for the exact lesion type and location.
When to use this code
Use L01.0 when the provider documents impetigo as the diagnosis, including localized nonbullous or bullous disease. Apply it when the record clearly identifies impetigo rather than another dermatitis, ulcer, or nonspecific rash. If the documentation is unclear, check documentation.
Do not use for
Do not use this code for cellulitis, eczema, or simple skin irritation. If the note only says “rash” or “skin infection” without impetigo, do not assume this code.
Coding tip
Code only when impetigo is explicitly documented and avoid substituting it for nonspecific crusted lesions.