Billable / Specific Code
ICD-10-CM L21.9 is the diagnosis code for Seborrheic dermatitis, unspecified. This code falls under the section "Dermatitis and eczema" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where L21.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, L21.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
L21.9 is the ICD-10-CM diagnosis code for "Seborrheic dermatitis, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of L21.9 is L21 ("Seborrheic dermatitis"). L21.9 provides a more specific classification within this category.
L21.9 is located in Section L20-L30 — "Dermatitis and eczema" within Chapter 12 of the ICD-10-CM Tabular List.
Use L21.9 when the patients documented diagnosis matches "Seborrheic dermatitis, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Seborrheic dermatitis, unspecified is L21.9.
Yes, L21.9 can be used as a primary diagnosis code since it is billable and specific.
L21.9 is in Chapter 12 of the ICD-10-CM Tabular List.
Yes, L21.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.