L21.0

ICD-10Billable

Seborrhea capitis

Official ICD-10-CM descriptor (FY2026)

Seborrhea capitis

L21.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Cradle cap

Related codes in L21

L21.1Seborrheic infantile dermatitis
L21.8Other seborrheic dermatitis
L21.9Seborrheic dermatitis, unspecified

Where this code sits

Chapter: 12. Diseases of the skin and subcutaneous tissue (L00-L99)
Block: Dermatitis and eczema (L20-L30)
Parent code: L21

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.