ICD-10 Code L03.311 – Cellulitis of abdominal wall (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.311 – Cellulitis of abdominal wall
What it is
L03.311 identifies cellulitis affecting the abdominal wall. Use it when documentation shows a bacterial infection of the skin and subcutaneous tissue over the abdomen.
Clinical signs
Typical findings include localized redness, warmth, swelling, tenderness, and spreading skin inflammation on the abdominal wall. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider specifically documents cellulitis of the abdominal wall, including abdominal skin or subcutaneous tissue infection. It may apply when the infection is described as abdominal wall cellulitis, lower abdominal cellulitis, or similar wording. If the note only says abdominal pain, abscess, or postoperative wound infection, check documentation before coding.
Do not use for
Do not use L03.311 for noninfectious abdominal skin irritation, simple rash, or a localized abscess without cellulitis. Check documentation if the condition is described as a surgical site infection or deeper soft tissue infection.
Coding tip
Code only when the record clearly links cellulitis to the abdominal wall; if the site is vague, query the provider.