ICD-10 Code L02.621 – Furuncle of right foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.621 – Furuncle of right foot
What it is
This code identifies a localized boil, or furuncle, on the right foot. It reflects a deep infection of a hair follicle that forms a painful, pus-filled nodule.
Clinical signs
Typical findings include a tender, red, swollen lesion with central pustule or drainage. Clinical features vary; refer to documentation for laterality and whether the lesion is truly a furuncle.
When to use this code
Use L02.621 when the provider documents a furuncle specifically on the right foot. It is appropriate when the record clearly identifies the site and laterality, even if the note also mentions surrounding inflammation or drainage.
Choose this code when the diagnosis is not described as cellulitis, abscess of another site, or a nonspecific skin infection. Check documentation if the location is unclear or if multiple skin lesions are present.
Do not use for
Do not use this code for a left foot lesion, an unspecified foot lesion, or a different type of abscess. Do not assign it when the record only says “skin infection” without confirming a furuncle.
Coding tip
Verify both the diagnosis and laterality in the provider note before assigning L02.621.