ICD-10 Code L03.326 – Acute lymphangitis of umbilicus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.326 – Acute lymphangitis of umbilicus
What it is
L03.326 identifies acute lymphangitis involving the umbilicus. It means an acute inflammatory infection of lymphatic vessels around the navel, usually from a nearby skin or soft tissue source.
Clinical signs
Typical findings include redness, warmth, swelling, and tenderness around the umbilicus, sometimes with red streaking toward regional lymph nodes. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically documents acute lymphangitis centered at the umbilicus. It may also fit when the clinician describes an infected umbilical area with lymphatic spread and no more specific alternate diagnosis. Check documentation if the site or process is unclear.
Do not use for
Do not use it for uncomplicated umbilical dermatitis, omphalitis without lymphangitis, or general cellulitis unless the lymphatic involvement is documented. Check documentation for a more specific diagnosis.
Coding tip
Code only when the provider links the infection to the umbilicus and documents acute lymphangitis, not just nonspecific redness or drainage.