L21
Non-billableSeborrheic dermatitis
L21 is the ICD-10-CM code for Seborrheic dermatitis. It is a non-billable category code — use a more specific child code such as L21.0 for billing.
- Status
- Header (non-billable)
- Chapter
- L00-L99
- Subcodes
- 4
- Edition
- FY2026
L00-L99 Diseases of the skin and subcutaneous tissue
What this means — in plain language
MedlinePlus · NIHYour scalp is the skin on the top of your head. Unless you have hair loss , hair grows on your scalp. Different skin problems can affect your scalp. Dandruff is a flaking of the skin. The flakes are yellow or white. Dandruff may make your scalp feel itchy. It usually starts after puberty, and is more common in men. Dandruff is usually a symptom of seborrheic dermatitis, or seborrhea. It is a skin condition that can…
Read more about Dandruff, Cradle Cap, and Other Scalp Conditions at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labeling- Sulfacetamide Sodium, Sulfur›
- Sulfacetamide Sodium and Sulfur›
- Sodium Sulfacetamide and Sulfur›
- Selenium Sulfide›
- Sodium Sulfacetamide 9.8% Sulfur 4.8%›
- Sodium Sulfacetamide, Sulfur›
- Fluocinonide, Dimethicone›
- IodoquinolCorticosteroid [EPC]›
- Sodium Sulfacetamide 10% and Sulfur 5% Emollient Cream›
- Sodium Sulfacetamide 10%, Sulfur 5%›
- Sodium Sulfacetamide 8% Sulfur 4%›
- Sodium Sulfacetamide 9.8% and Sulfur 4.8%›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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