L03.9

Non-billable

Cellulitis and acute lymphangitis, unspecified

L03.9 is the ICD-10-CM code for Cellulitis and acute lymphangitis, unspecified. It is a non-billable category code — use a more specific child code such as L03.90 for billing.

Status
Header (non-billable)
Chapter
L00-L99
Parent
L03
Subcodes
2
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

What this means — in plain language

MedlinePlus · NIH

Cellulitis is an infection of the skin and deep underlying tissues. Group A strep ( streptococcal ) bacteria are the most common cause. The bacteria enter your body when you get an injury such as a bruise, burn, surgical cut, or wound. Symptoms include: Fever and chills Swollen glands or lymph nodes A rash with painful, red, tender skin. The skin may blister and scab over. Your health care provider may take a sample…

Read more about Cellulitis at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code L03.9?
L03.9 is the ICD-10-CM code for "Cellulitis and acute lymphangitis, unspecified". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L03.9 a billable code?
No — L03.9 is a non-billable header code. Use a more specific child code (such as L03.90) for billing.
What are the subcodes of L03.9?
L03.9 has 2 more specific child codes, including L03.90, L03.91.

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

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