ICD-10 Code L03.22 – Cellulitis and acute lymphangitis of neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L03.22 – Cellulitis and acute lymphangitis of neck
What it is
L03.22 identifies an acute bacterial infection of the neck skin and nearby lymphatic channels. Use it when the record specifically documents cellulitis, acute lymphangitis, or both in the neck region.
Clinical signs
Typical findings include localized redness, warmth, swelling, tenderness, and possible spreading streaks along lymphatic vessels. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents cellulitis of the neck, acute lymphangitis of the neck, or cellulitis with lymphangitic spread in that area. It fits outpatient, inpatient, and emergency records when the neck site is clearly identified. If the note only says “cellulitis” without a location, check documentation.
Do not use for
Do not use L03.22 for cellulitis in another body site, such as the face, scalp, or trunk. Do not assign it when the record describes chronic lymphatic disease or a noninfectious neck condition.
Coding tip
Always confirm the anatomic site in the provider note; the neck location is essential for L03.22.