ICD-10 Code L02.531 – Carbuncle of right hand (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.531 – Carbuncle of right hand
What it is
L02.531 identifies a carbuncle located on the right hand. A carbuncle is a deeper skin infection made up of connected boils, usually involving infected hair follicles and surrounding tissue.
Clinical signs
Typical findings include a painful, swollen, red area with pus drainage and possible 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 on the right hand. It is appropriate when the note identifies the site and does not describe a different infection such as cellulitis, abscess, or furuncle alone.
Do not use for
Do not use this code for a carbuncle on another body site or for an unspecified hand laterality. Do not assign it if the documentation only says “boil” or “skin abscess” without confirming carbuncle.
Coding tip
Verify both the diagnosis type and laterality in the provider note before assigning L02.531.