Other epidermal thickening (L85) ICD-10-CM
The L85 code range covers other epidermal thickening with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- hypertrophic disorders of the skin L91
Codes in the L85 Range 7 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L85 range.
Keratoacanthoma
A benign, non-neoplastic, usually self-limiting epithelial lesion closely resembling squamous cell carcinoma clinically and histopathologically. It occurs in solitary, multiple, and eruptive forms. The solitary and multiple forms occur on sunlight exposed areas and are identical histologically; they affect primarily white males. The eruptive form usually involves both sexes and appears as a generalized papular eruption.
About the L85 Code Range
The ICD-10 code section L85 covers a variety of skin conditions characterized by different types of epidermal thickening. These codes specify disorders such as acquired ichthyosis, palmoplantar keratoderma, and other unusual forms of hyperkeratosis that impact skin texture and thickness.
The ICD-10 code L85.0 is used for acquired ichthyosis, also known as acquired paraneoplastic ichthyosis or senile xeroderma, conditions involving dry, scaly skin. L85.1 covers acquired keratosis palmaris et plantaris, with synonyms including keratoderma tylodes palmaris progressiva and chronic hand eczema, indicating thickened skin on palms and soles. L85.2 denotes keratosis punctata, a type of pointed thickening often seen on palms and soles. L85.3 addresses xerosis cutis, commonly called dry skin dermatitis, asteatotic eczema, or pruritic dermatitis. More rare forms and neoplastic variants appear under L85.8, encompassing keratosis pilaris, keratoacanthoma, and other specified epidermal thickenings with multiple synonyms. Lastly, L85.9 is reserved for unspecified epidermal thickening, including hyperkeratosis of nipple or perineum. These detailed codes aid accurate clinical documentation and billing for various thickening skin disorders under the umbrella of other epidermal thickening.
Questions About This Page
How many billable codes are in the L85 range?
Of the 7 codes in this range, 6 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 L85 range classify?
The range classifies other epidermal thickening. 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.
