L03.121 — Acute lymphangitis of right axilla
L03.121 is a billable, specific ICD-10-CM code for acute lymphangitis of right axilla. It is valid for submission on a claim.
Excludes2 inherited from the categories above L03.121
Also inherited, and the opposite of Excludes1: these conditions are not part of L03.121, but a patient can have both, so you may code both.
Written on L03.12 — Acute lymphangitis of other parts of limb
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 L03.121
These codes carry an Excludes1 note pointing at L03.121. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L03.121 alone.
- I89.1Lymphangitis
Risk adjustment
L03.121 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.
Medicare coverage
L03.121 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
- A55909Billing and Coding: Wound Care
Code history
L03.121 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 L03.12. If L03.121 is not quite right, the correct code is usually one of these.
Questions about L03.121
- Is L03.121 a billable ICD-10-CM code?
- Yes. L03.121 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does L03.121 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).