Question 1

Is L21 a billable ICD-10 code?

Accepted Answer

No, L21 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code L21 mean?

Accepted Answer

ICD-10-CM code L21 represents Seborrheic dermatitis. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code L21 introduced?

Accepted Answer

Code L21 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code L21?

Accepted Answer

The parent category for L21 is section:L20-L30 (Dermatitis and eczema (L20-L30)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions should be coded separately from L21?

Accepted Answer

Code L21 has Type 2 Excludes including: infective dermatitis (L30.3); seborrheic keratosis (L82.-). These conditions are not included in L21 but can be coded together if the patient has both conditions.

L212026

Excludes220Not included here

Notes1Additional information

Is L21 a billable ICD-10 code?

What does ICD-10 code L21 mean?

When was ICD-10 code L21 introduced?

What is the parent category for ICD-10 code L21?

What conditions should be coded separately from L21?