ICD-10 Code L02.226 – Furuncle of umbilicus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.226 – Furuncle of umbilicus
What it is
This code identifies a localized boil, or skin abscess, centered at the umbilicus. It indicates a bacterial infection of the hair follicle or surrounding skin in the belly button area.
Clinical signs
Typical findings include a tender, swollen, red nodule at the umbilicus, sometimes with drainage or a central pustule. Clinical features vary; refer to documentation if the record does not clearly describe a furuncle.
When to use this code
Use this code when the provider documents a furuncle specifically involving the umbilicus. It is appropriate for an isolated boil at the navel, whether newly diagnosed or treated in follow-up, if the site is clearly documented.
Do not use for
Do not use this code for a general skin abscess without umbilical involvement. Do not use it when the documentation describes cellulitis, omphalitis, or another abdominal wall infection instead.
Coding tip
Confirm the anatomic site in the note; the code is site-specific, so “umbilicus” must be documented.