Hypertrophic disorders of skin (L91) ICD-10-CM
The L91 code range covers hypertrophic disorders of skin with 4 ICD-10-CM diagnosis codes. 3 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 L91 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L91 range.
Cicatrix, Hypertrophic
An elevated scar, resembling a KELOID, but which does not spread into surrounding tissues. It is formed by enlargement and overgrowth of cicatricial tissue and regresses spontaneously.
About the L91 Code Range
Hypertrophic skin disorders involve thickened skin, including scars. They sit within the broader group of skin and under-the-skin disorders.
The subdivisions distinguish hypertrophic scars, L91.0, from other hypertrophic skin disorders, L91.8, and disorders not specified further, L91.9.
Questions About This Page
How many billable codes are in the L91 range?
Of the 4 codes in this range, 3 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 L91 range classify?
The range classifies hypertrophic disorders of skin. 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.
