ICD-10 Code L02.22 – Furuncle of trunk (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.22 – Furuncle of trunk
What it is
L02.22 identifies a furuncle, or boil, located on the trunk. It refers to a localized bacterial skin infection centered on a hair follicle, usually forming a painful, pus-filled nodule.
Clinical signs
Typical findings include a tender, red, swollen lesion on the chest, back, or abdomen that may drain pus. Clinical features vary; refer to documentation if the location or depth is unclear.
When to use this code
Use this code when the record clearly documents a furuncle on the trunk and no more specific site code is provided. It fits isolated boils of the trunk without documentation of a broader skin infection. If the note only says “boil” and the trunk is specified, this code is appropriate.
Do not use for
Do not use it for furuncles on the face, limbs, or other specific sites when a more precise code is documented. Do not use for nonspecific skin abscesses or cellulitis unless the provider documents a furuncle. Check documentation.
Coding tip
Verify that the trunk location is explicit in the chart before assigning L02.22.