ICD-10 Code L03.321 – Acute lymphangitis of abdominal wall (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.321 – Acute lymphangitis of abdominal wall
What it is
L03.321 identifies an acute infection and inflammation of the lymphatic channels in the abdominal wall. It is used when the condition is localized to that anatomic site.
Clinical signs
Typical findings include localized redness, warmth, swelling, tenderness, and possible red streaking along lymphatic pathways. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents acute lymphangitis specifically involving the abdominal wall. It fits cases where the infection is limited to that region and not described as a broader cellulitis or abscess. Check documentation if the note is unclear about the exact site or diagnosis.
Do not use for
Do not use L03.321 for nonspecific abdominal wall skin infection without lymphatic involvement. It is also not appropriate if the record describes a different body site or a separate abscess diagnosis.
Coding tip
Confirm both the acute nature and the abdominal wall location in the provider’s note before assigning L03.321.