ICD-10 Code L03.8 – Cellulitis and acute lymphangitis of other sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.8 – Cellulitis and acute lymphangitis of other sites
What it is
L03.8 identifies cellulitis or acute lymphangitis in body sites other than the common coded locations. Use it when documentation names a specific site that is not covered by a more precise code.
Clinical signs
Typical findings include localized redness, warmth, swelling, and tenderness, with possible spreading inflammation along lymphatic channels. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents cellulitis or acute lymphangitis at an “other site,” such as a location not separately indexed to a more specific category. It also applies when the clinician identifies the site but no more specific ICD-10-CM option is available. Check documentation for laterality, anatomic detail, and any associated abscess or deeper infection.
Do not use for
Do not use L03.8 if the infection is coded elsewhere by site, such as face, limb, trunk, or perineum. Do not use it for nonspecific skin inflammation without documented cellulitis or lymphangitis.
Coding tip
Code the documented anatomic site first, and verify whether a more specific cellulitis code exists before selecting L03.8.