Is L03.019 a billable ICD-10-CM code?

Yes. L03.019 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L03.019 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Infections of the skin and subcutaneous tissue (L00-L08).

What cannot be coded together with L03.019?

L03.019 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L03.019 (L03.01) and apply to it just the same.

L03.019

L03.019 — Cellulitis of unspecified finger

Billable / specific codeICD-10-CM

L03.019 is a billable, specific ICD-10-CM code for cellulitis of unspecified finger. It is valid for submission on a claim.

Excludes1 inherited from the categories above L03.019

These are not written on L03.019, but they bind it: a note on a category applies to every code beneath it. Billing L03.019 with anything listed here is a denial.

Written on L03.01 — Cellulitis of finger

herpetic whitlow (B00.89)

Excludes2 inherited from the categories above L03.019

Also inherited, and the opposite of Excludes1: these conditions are not part of L03.019, but a patient can have both, so you may code both.

Written on L03 — Cellulitis and acute lymphangitis

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)

Other codes that can never be billed with L03.019

These codes carry an Excludes1 note pointing at L03.019. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L03.019 alone.

I89.1Lymphangitis

Risk adjustment

L03.019 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

L03.019 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share L03.01. If L03.019 is not quite right, the correct code is usually one of these.

Questions about L03.019

Is L03.019 a billable ICD-10-CM code?: Yes. L03.019 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L03.019 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Infections of the skin and subcutaneous tissue (L00-L08).
What cannot be coded together with L03.019?: L03.019 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L03.019 (L03.01) and apply to it just the same.