ICD-10 Code L02.431 – Carbuncle of right axilla (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.431 – Carbuncle of right axilla
What it is
L02.431 identifies a carbuncle located in the right axilla. It refers to a deeper skin infection made up of connected boils in the armpit area.
Clinical signs
Typical findings include a painful, swollen, red, and tender mass with drainage or multiple openings. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a carbuncle specifically in the right axilla. It fits localized infection of the armpit skin and subcutaneous tissue, not a general abscess elsewhere. If laterality is not documented, check documentation before assigning a right-sided code.
Do not use for
Do not use it for a simple furuncle, cellulitis, or an abscess in another body site. If the record does not clearly state “right axilla,” do not assume laterality.
Coding tip
Match the site and side exactly as documented, and verify whether the note says carbuncle rather than a different skin infection.