L03
ICD-10Non-billable categoryCellulitis and acute lymphangitis
Official ICD-10-CM descriptor (FY2026)
Cellulitis and acute lymphangitis
L03 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported 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)
More specific codes under L03
- L03.0Cellulitis and acute lymphangitis of finger and toecategory
- L03.1Cellulitis and acute lymphangitis of other parts of limbcategory
- L03.2Cellulitis and acute lymphangitis of face and neckcategory
- L03.3Cellulitis and acute lymphangitis of trunkcategory
- L03.8Cellulitis and acute lymphangitis of other sitescategory
- L03.9Cellulitis and acute lymphangitis, unspecifiedcategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.