L03 Cellulitis and acute lymphangitis
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The ICD-10-CM code for Cellulitis and acute lymphangitis is L03 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- L00-L08: Infections of the skin and subcutaneous tissue (L00-L08)
- Category L03
- 74 codes (55 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Pressure ulcer stages—L89 identifies site/stage; code all ulcersa. Pressure ulcer stage codes 1) Pressure ulcer stages Codes in category L89, Pressure ulcer, identify the site and stage of the pressure ulcer. The ICD-10-CM classifies pressure ulcer stages based on severity, which is designated by stages 1-4, deep tissue pressure injury, unspecified stage, and unstageable. Assign as many codes from category L89 as needed to identify all the pressure ulcers the patient has, if applicable. See Section I.B.14. for pressure ulcer stage documentation by clinicians other than patient's provider.
Unstageable pressure ulcers—L89.--0 based on clinical documentation2) Unstageable pressure ulcers Assignment of the code for unstageable pressure ulcer (L89.--0) should be based on the clinical documentation. These codes are used for
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026
References
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Reference L03 with the canonical source and edition:
L03 — Cellulitis and acute lymphangitis. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/L03
Canonical URL: https://icd10codingpro.com/codes/L03