ICD-10 Code L03.898 – Acute lymphangitis of other sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.898 – Acute lymphangitis of other sites
What it is
This code identifies an acute infection and inflammation of lymphatic vessels in sites other than the usual limbs or trunk areas. Use it when the record specifically documents acute lymphangitis at another, named location.
Clinical signs
Typical findings include localized tenderness, redness, warmth, and linear streaking along lymphatic channels. Regional lymph node enlargement may occur; clinical features vary, so refer to documentation.
When to use this code
Use L03.898 when the provider documents acute lymphangitis and specifies an anatomic site that is not captured by a more specific lymphangitis code. It fits cases where the infection is clearly acute and the site is documented in the chart. If the note only says “cellulitis” or “infection” without lymphatic involvement, check documentation before coding.
Do not use for
Do not use this code for chronic lymphangitis or for lymphadenitis without lymphatic vessel inflammation. Do not assign it when the site is unspecified or when another diagnosis better describes the condition.
Coding tip
Confirm both “acute” and the exact site in the provider note before assigning L03.898.