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    v1.0.28
    OpenPayerBilling CodesOther disorders of the skin and subcutaneous tissueICD-10-CM l91-hypertrophic-disorders-of-skin
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    ICD-10-CM Code For Hypertrophic Disorders Of Skin: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group L91 includes hypertrophic scars, keloids, and other excessive scar tissue disorders of the skin that result from abnormal wound healing and fibrous overgrowth. These ICD-10-CM diagnosis codes are used to document clinical scenarios such as postinjury or postsurgical scarring severity, anatomic site involvement, and presence of functional impairment or cosmetic concern. Accurate coding within the ICD-10-CM L91 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM L91: Hypertrophic Disorders Of Skin Overview

    The ICD-10-CM L91 group captures hypertrophic and keloid scarring and other excessive scar reactions affecting the skin and subcutaneous tissue. These diagnoses target abnormal wound healing processes and fibrous tissue overgrowth following injury, surgery, burns, or inflammatory skin disease. Accurate coding matters for clinical records and reimbursement because it documents severity, location, and complications that affect treatment decisions and claim adjudication.

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    When to Use

    Use a code from this group when documenting patients with clinically diagnosed hypertrophic scarring or keloid formation following injury, surgery, burns, or inflammatory skin disease. Codes are selected to reflect the specific scar type and body site to support clinical management and billing.

    ICD-10-CM Codes

    3 rows

    ICD-10-CM CodeDescription
    L91.0Hypertrophic scar
    L91.8Other hypertrophic disorders of the skin
    L91.9Hypertrophic disorder of the skin, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    606Minor Skin Disorders with MCC
    607Minor Skin Disorders without MCC

    Related Codes

    L80-VITILIGO

    ICD-10-CM Code For Vitiligo: Group Overview

    L81-OTHER-DISORDERS-OF-PIGMENTATION

    ICD-10-CM Code For Other Disorders Of Pigmentation: Group Overview

    L82-SEBORRHEIC-KERATOSIS

    ICD-10-CM Code For Seborrheic Keratosis: Group Overview

    L83-ACANTHOSIS-NIGRICANS

    ICD-10-CM Code For Acanthosis Nigricans: Group Overview

    L84-CORNS-AND-CALLOSITIES

    ICD-10-CM Code For Corns And Callosities: Group Overview

    L85-OTHER-EPIDERMAL-THICKENING

    ICD-10-CM Code For Other Epidermal Thickening: Group Overview

    L86-KERATODERMA-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Keratoderma In Diseases Classified Elsewhere: Group Overview

    L87-TRANSEPIDERMAL-ELIMINATION-DISORDERS

    ICD-10-CM Code For Transepidermal Elimination Disorders: Group Overview

    L88-PYODERMA-GANGRENOSUM

    ICD-10-CM Code For Pyoderma Gangrenosum: Group Overview

    L89-PRESSURE-ULCER

    ICD-10-CM Code For Pressure Ulcer: Group Overview

    Showing 1–10 of 18

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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