L20 ICD-10-CM Code: Atopic dermatitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
L20Atopic dermatitis
ICD-10-CM diagnosis code · United States clinical modification
Where L20 sits
- 1
Chapter 12
Diseases of the skin and subcutaneous tissue (L00-L99)
- 2
Section
Dermatitis and eczema (L20-L30)
- 3
Category L20
Atopic dermatitis
- 4
Code L20
Atopic dermatitis
Codes under L20
L20 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for L20.
Code first
No “code first” instruction is listed for L20.
Use additional code
No “use additional code” instruction is listed for L20.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for L20.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for L20.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code L20 mean?
L20 is the FY 2027 U.S. ICD-10-CM code for “Atopic dermatitis.”
Is L20 a billable or specific ICD-10-CM code?
No. L20 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is L20 located in ICD-10-CM?
L20 is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Dermatitis and eczema (L20-L30) (L20–L30), under category L20, Atopic dermatitis.
What coding notes are listed for L20?
No inclusion terms are listed for L20 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.