ICD-10 Code L02.23 – Carbuncle of trunk (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.23 – Carbuncle of trunk
What it is
L02.23 identifies a carbuncle on the trunk, meaning a clustered skin infection that forms a deeper, painful abscess in this body area. It is a localized bacterial infection involving the skin and underlying tissue.
Clinical signs
Typical findings include a tender, red, swollen lesion on the trunk with drainage or multiple openings. Clinical features vary; refer to documentation if the record does not clearly describe the lesion as a carbuncle.
When to use this code
Use this code when the provider documents a carbuncle specifically located on the chest, back, abdomen, or another part of the trunk. It also applies when the note clearly identifies a trunk abscess as a carbuncle. If the site is not stated, check documentation before assigning the code.
Do not use for
Do not use L02.23 for furuncles, cellulitis, or abscesses at other body sites. If the documentation only says “skin infection” or “boil” without trunk location or carbuncle wording, check documentation.
Coding tip
Confirm both the anatomic site and the term carbuncle; the body location drives code selection.