ICD-10 Code L08.9 – Local infection of the skin and subcutaneous tissue, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L08.9 – Local infection of the skin and subcutaneous tissue, unspecified
What it is
L08.9 identifies a localized infection involving the skin or subcutaneous tissue when the record does not name a more specific condition. Use it when documentation confirms a skin or soft tissue infection but gives no clearer diagnosis.
Clinical signs
Typical findings may include localized redness, swelling, warmth, tenderness, or drainage at the affected site. Clinical features vary; refer to documentation for the exact infection described.
When to use this code
Use this code when the provider documents a local skin or subcutaneous infection without specifying cellulitis, abscess, furuncle, or another named entity. It also fits brief notes such as “skin infection” when no further detail is available. Check documentation if the record suggests a more specific diagnosis.
Do not use for
Do not use L08.9 when the infection is identified as cellulitis, abscess, or another specific skin disorder. Do not assign it for noninfectious inflammatory skin conditions or when documentation is too vague to confirm infection.
Coding tip
Code the most specific documented infection first; if the note only says “local skin infection,” L08.9 is the appropriate unspecified choice.