Atopic dermatitis (L20) ICD-10-CM
The L20 code range covers atopic dermatitis with 9 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the L20 Range 9 codes · 7 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L20 range.
Dermatitis, Atopic
A chronic inflammatory genetically determined disease of the skin marked by increased ability to form reagin (IgE), with increased susceptibility to allergic rhinitis and asthma, and hereditary disposition to a lowered threshold for pruritus. It is manifested by lichenification, excoriation, and crusting, mainly on the flexural surfaces of the elbow and knee. In infants it is known as infantile eczema.
About the L20 Code Range
Atopic dermatitis is a chronic, inherited inflammatory skin condition that causes itching and mainly affects the bends of the elbows and knees. In infants, it is called infantile eczema.
L20 separates Besnier's prurigo (L20.0), other atopic dermatitis (L20.8), and unspecified atopic dermatitis (L20.9). Under L20.8, the titles distinguish atopic neurodermatitis, flexural eczema, infantile eczema, intrinsic allergic eczema, and other atopic dermatitis.
Questions About This Page
How many billable codes are in the L20 range?
Of the 9 codes in this range, 7 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the L20 range classify?
The range classifies atopic dermatitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
