L03

Non-billable

Cellulitis and acute lymphangitis

L03 is the ICD-10-CM code for Cellulitis and acute lymphangitis. It is a non-billable category code — use a more specific child code such as L03.0 for billing.

Status
Header (non-billable)
Chapter
L00-L99
Subcodes
6
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

Excludes2 — not included here

  • cellulitis of anal and rectal region (K61.-)
  • cellulitis of external auditory canal (H60.1)
  • cellulitis of eyelid (H00.0)
  • cellulitis of female external genital organs (N76.4)
  • cellulitis of lacrimal apparatus (H04.3)
  • cellulitis of male external genital organs (N48.2, N49.-)
  • cellulitis of mouth (K12.2)
  • cellulitis of nose (J34.0)
  • eosinophilic cellulitis [Wells] (L98.3)
  • febrile neutrophilic dermatosis [Sweet] (L98.2)
  • lymphangitis (chronic) (subacute) (I89.1)

Frequently asked questions

What is ICD-10 code L03?
L03 is the ICD-10-CM code for "Cellulitis and acute lymphangitis". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L03 a billable code?
No — L03 is a non-billable header code. Use a more specific child code (such as L03.0) for billing.
What are the subcodes of L03?
L03 has 6 more specific child codes, including L03.0, L03.1, L03.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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