L20.9 – Atopic dermatitis, unspecified

ICD-10-CM 2027 diagnosis code · Dermatitis and eczema

Billable code

ICD-10-CM code L20.9
Code
L20.9 (claims format: L209)
Description
Atopic dermatitis, unspecified
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
12. Diseases of the skin and subcutaneous tissue (L00-L99)
Block
L20-L30 Dermatitis and eczema
Parent codes
L20

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block L20-L30

Excludes2 (not included here):
  • chronic (childhood) granulomatous disease (D71-)
  • dermatitis gangrenosa (L08.0)
  • dermatitis herpetiformis (L13.0)
  • dry skin dermatitis (L85.3)
  • factitial dermatitis (L98.1)
  • perioral dermatitis (L71.0)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • stasis dermatitis (I87.2)
Notes:
  • In this block the terms dermatitis and eczema are used synonymously and interchangeably.

Index terms for L20.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in L20

Frequently asked questions

What is ICD-10 code L20.9?

L20.9 is the ICD-10-CM code for atopic dermatitis, unspecified, in the block L20-L30 (Dermatitis and eczema).

Is L20.9 a billable code?

Yes. L20.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does L20.9 belong to?

It belongs to category L20 – Atopic dermatitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.