ICD-10 Code L03.122 – Acute lymphangitis of left axilla (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.122 – Acute lymphangitis of left axilla
What it is
This code identifies an acute infection and inflammation of the lymphatic vessels in the left axillary region. It is used when documentation specifies lymphangitis affecting the left armpit area.
Clinical signs
Typical findings include localized pain, tenderness, redness, and swelling along lymphatic channels. Clinical features vary; refer to documentation for the exact laterality and extent.
When to use this code
Use L03.122 when the provider documents acute lymphangitis limited to the left axilla. It may apply when the note clearly links the infection to that anatomic site and describes it as acute. Check documentation if the record only says cellulitis, abscess, or nonspecific lymph node inflammation.
Do not use for
Do not use this code for chronic lymphatic disorders, generalized lymphadenitis, or infection documented in another site. If the record does not specify the left axilla, check documentation.
Coding tip
Verify both acuity and laterality in the provider note before assigning L03.122.