ICD-10 Code L02.236 – Carbuncle of umbilicus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.236 – Carbuncle of umbilicus
What it is
This code identifies a carbuncle located at the umbilicus. A carbuncle is a deeper skin infection made up of connected boils, usually involving several hair follicles and surrounding tissue.
Clinical signs
You may see a painful, swollen, red, and tender lesion with drainage or pus. Clinical features vary; refer to documentation for whether the provider describes a carbuncle, abscess, or another localized infection.
When to use this code
Use L02.236 when the provider documents a carbuncle specifically at the umbilicus or navel. It fits outpatient or inpatient records that clearly identify the site and the diagnosis. If the note only says “skin infection” or “abscess,” check documentation for the exact term and location.
Do not use for
Do not use this code for a simple boil, cellulitis, or an abscess without documentation of a carbuncle. Check documentation if the umbilical lesion is described differently or the site is not confirmed.
Coding tip
Code the exact anatomic site only when the provider documents it; if the location is unclear, query for clarification.