ICD-10 Code L02.221 – Furuncle of abdominal wall (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.221 – Furuncle of abdominal wall
What it is
This code identifies a localized boil, or furuncle, on the abdominal wall. It refers to a deep infection of a hair follicle that forms a painful, pus-filled lump.
Clinical signs
Typical findings include a tender, red, swollen nodule with central pus or drainage. Clinical features vary; refer to documentation if the record does not clearly describe a furuncle of the abdominal wall.
When to use this code
Use L02.221 when the provider documents a furuncle specifically located on the abdominal wall. It is appropriate when the note describes a boil, abscessed follicle, or localized skin infection in that anatomic site. Confirm the site and diagnosis wording in the chart.
Do not use for
Do not use this code for cellulitis, a generalized skin abscess, or a furuncle at another body site. Check documentation when the lesion is described only as an abscess without the abdominal wall location.
Coding tip
Code the documented anatomic site exactly; if the abdominal wall is not stated, query or use the more specific supported diagnosis.