ICD-10 Code L03.329 – Acute lymphangitis of trunk, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.329 – Acute lymphangitis of trunk, unspecified
What it is
This code identifies an acute infection and inflammation of lymphatic vessels in the trunk, without a more specific site or cause documented. Use it when the record states lymphangitis of the trunk but does not further specify the area.
Clinical signs
Typical findings include tender, red streaking along lymphatic channels, local swelling, and pain. Fever or enlarged nearby lymph nodes may occur, but clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents acute lymphangitis involving the trunk and does not name a more precise location. It also fits charting that describes lymphatic inflammation of the chest, abdomen, or back without additional detail. If the note identifies a different site or a different diagnosis, code that instead.
Do not use for
Do not use this code for lymphangitis of an arm, leg, or other specified site. Do not assign it when the record supports cellulitis, abscess, or another skin infection instead.
Coding tip
Check documentation for the exact anatomic site before assigning L03.329, because unspecified trunk codes should not replace a more specific lymphangitis diagnosis.