Lichen simplex chronicus and prurigo (L28) ICD-10-CM
The L28 code range covers lichen simplex chronicus and prurigo with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the L28 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L28 range.
Prurigo
A name applied to several itchy skin eruptions of unknown cause. The characteristic course is the formation of a dome-shaped papule with a small transient vesicle on top, followed by crusting over or lichenification. (From Dorland, 27th ed)
About the L28 Code Range
The ICD-10 codes in the L28 section are specifically used to identify and classify chronic itchy skin conditions such as lichen simplex chronicus and prurigo. These codes help distinguish between different types of persistent, inflammatory dermatologic disorders characterized by itching and skin thickening.
L28.0 describes lichen simplex chronicus, also known by many terms including pigmented purpuric dermatosis, lichenified eczema, and neurodermatitis of the external ear. This code captures cases where the skin becomes thickened and rough from repeated scratching or rubbing, often involving areas like the scalp, genitalia, or perineum. L28.1 is used specifically for prurigo nodularis, characterized by firm, itchy nodules on the skin. Meanwhile, L28.2 covers other prurigo conditions such as actinic prurigo or prurigo pigmentosa, which may present as various types of itchy rashes often related to environmental or pregnancy-associated triggers. Medical professionals and coders use these codes to precisely document and treat these distinct, chronic itch-related skin disorders.
Questions About This Page
How many billable codes are in the L28 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the L28 range classify?
The range classifies lichen simplex chronicus and prurigo. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
