Lichen simplex chronicus and prurigo (L28)
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.
Diseases of the skin and subcutaneous tissue (L00–L99)
Dermatitis and eczema (L20-L30)
L28 Lichen simplex chronicus and prurigo
- L28.0 Lichen simplex chronicus
- L28.1 Prurigo nodularis
- L28.2 Other prurigo
Lichen simplex chronicus and prurigo (L28)
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
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)
