ICD-10 Code L02.3 – Cutaneous abscess, furuncle and carbuncle of buttock (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L02.3 – Cutaneous abscess, furuncle and carbuncle of buttock
What it is
L02.3 identifies a localized bacterial skin infection on the buttock, including a cutaneous abscess, furuncle, or carbuncle. Use it when the documentation specifies this anatomic site.
Clinical signs
Typical findings include a painful, red, swollen lesion that may be fluctuant or drain pus. A furuncle is usually a single infected hair follicle; a carbuncle involves clustered lesions. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents an abscess, boil, or carbuncle of the buttock and does not assign a more specific site code. It fits outpatient, inpatient, or emergency records when the buttock location is clearly stated. If laterality or deeper site detail is documented, code to the most specific available option.
Do not use for
Do not use L02.3 for pilonidal disease, anal or perianal abscess, or infections at another body site. Check documentation if the lesion is described only as cellulitis or if the buttock location is uncertain.
Coding tip
Link the code to the exact documented site wording, and verify whether the note says abscess, furuncle, or carbuncle.