ICD-10 Code L01.01 – Non-bullous impetigo (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L01.01 – Non-bullous impetigo
What it is
L01.01 identifies non-bullous impetigo, a superficial bacterial skin infection. It usually affects exposed skin and is commonly seen in children, but you should code it whenever the documentation specifies this form.
Clinical signs
Typical findings include honey-colored crusts, small vesicles or pustules, and localized erythema. Clinical features vary; refer to documentation if the note does not clearly distinguish non-bullous from bullous impetigo.
When to use this code
Use this code when the provider documents non-bullous impetigo, impetigo contagiosa, or a clearly described superficial crusted bacterial skin infection consistent with this type. It is also appropriate when the diagnosis is confirmed in the assessment or final impression. Check documentation if the site or type is unclear.
Do not use for
Do not use L01.01 for bullous impetigo or other non-impetigo skin infections. If the record only says “skin infection” or another specific rash without impetigo, check documentation.
Coding tip
Code the documented impetigo type exactly; if the note does not specify non-bullous, verify before assigning L01.01.