L20Header code — not billable

Atopic dermatitis

Chapter
12. Diseases of the skin and subcutaneous tissue
Category
L20
Effective date
October 1, 2026

Related codes in category L20

L20.0Besnier's prurigoYesL20.8Other atopic dermatitisL20.81Atopic neurodermatitisYesL20.82Flexural eczemaYesL20.83Infantile (acute) (chronic) eczemaYesL20.84Intrinsic (allergic) eczemaYesL20.89Other atopic dermatitisYesL20.9Atopic dermatitis, unspecifiedYes

Frequently asked questions

What is ICD-10 code L20?

L20 is an ICD-10-CM diagnosis code for Atopic dermatitis.

Is L20 a billable code?

No. L20 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is L20 in?

L20 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.

When did L20 become effective?

L20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to L20?

L20 belongs to category L20, which includes 8 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.