ICD-10 Code L02.622 – Furuncle of left foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.622 – Furuncle of left foot
What it is
L02.622 identifies a furuncle, or boil, located on the left foot. It refers to a localized skin infection centered on a hair follicle, usually forming a painful, pus-filled nodule.
Clinical signs
Typical findings include a tender, red, swollen lesion with a central pustule or drainage. Clinical features vary; refer to documentation if the note does not clearly state a furuncle on the left foot.
When to use this code
Use this code when the provider documents a furuncle specifically on the left foot. It is appropriate when the site is clear and the lesion is described as a boil or furuncle. If the record only says “skin infection” or does not specify laterality, check documentation.
Do not use for
Do not use this code for carbuncles, abscesses at other sites, or nonspecific skin infections without furuncle documentation. If the lesion is on a different foot or the site is unclear, choose the documented diagnosis.
Coding tip
Confirm both the diagnosis term and the left-foot location in the provider note before assigning L02.622.