ICD-10 Code L03.029 – Acute lymphangitis of unspecified finger (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.029 – Acute lymphangitis of unspecified finger
What it is
L03.029 identifies acute lymphangitis affecting an unspecified finger. It means an acute infection or inflammation of the lymphatic channels in a finger, without a more specific finger designation in the record.
Clinical signs
Typical findings include a painful, red, swollen finger with streaking erythema that may extend proximally along the hand or arm. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents acute lymphangitis of a finger but does not specify which finger is involved. It also fits when the note clearly supports lymphangitic infection of a finger and no laterality or digit detail is available. Do not infer a different site from surrounding text.
Do not use for
Do not use it for cellulitis, abscess, or other skin infections of the finger unless lymphangitis is specifically documented. Check documentation if the record names a different digit or a more general hand infection.
Coding tip
Confirm that “lymphangitis” is stated explicitly; if the note only says swelling or redness, you need stronger documentation before assigning L03.029.