ICD-10 Code L02.629 – Furuncle of unspecified foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.629 – Furuncle of unspecified foot
What it is
This code identifies a furuncle, or boil, on the foot when the exact foot location is not documented. It reflects a localized skin infection centered on a hair follicle.
Clinical signs
Typical findings include a painful, red, swollen nodule that may become fluctuant or drain pus. Clinical features vary; refer to documentation.
When to use this code
Use L02.629 when the provider documents a furuncle of the foot but does not specify right or left foot or a more exact site. It also fits notes describing a boil on the foot without further detail. If the record identifies a different abscess or a more specific foot location, code that instead.
Do not use for
Do not use this code for cellulitis, abscesses without furuncle documentation, or lesions on a specified right or left foot. Check documentation if the diagnosis is unclear.
Coding tip
Code from the provider’s exact wording, and default to unspecified only when laterality or site is not documented.