ICDwise
L03 ⚠ Non-billable

Cellulitis and acute lymphangitis

ICD-10-CM · FY2026 · Diseases of the Skin and Subcutaneous Tissue

Code
L03
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Skin and Subcutaneous Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Excludes2 — not included here, but may code together
  • 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?
ICD-10-CM code L03 represents Cellulitis and acute lymphangitis. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Skin and Subcutaneous Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is L03 billable?
No. L03 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is L03 in?
L03 belongs to the Diseases of the Skin and Subcutaneous Tissue chapter (L00–L99) of ICD-10-CM.

Related codes in the L03 category

L03.0 Cellulitis and acute lymphangitis of finger and toe Non-billable L03.1 Cellulitis and acute lymphangitis of other parts of limb Non-billable L03.2 Cellulitis and acute lymphangitis of face and neck Non-billable L03.3 Cellulitis and acute lymphangitis of trunk Non-billable L03.01 Cellulitis of finger Non-billable L03.02 Acute lymphangitis of finger Non-billable L03.03 Cellulitis of toe Non-billable L03.04 Acute lymphangitis of toe Non-billable

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