ICD-10 Diagnosis Code L91.0

Hypertrophic scar

Diagnosis Code L91.0

ICD-10: L91.0
Short Description: Hypertrophic scar
Long Description: Hypertrophic scar
This is the 2017 version of the ICD-10-CM diagnosis code L91.0

Code Classification
  • Diseases of the skin and subcutaneous tissue
    • Other disorders of the skin and subcutaneous tissue (L80-L99)
      • Hypertrophic disorders of skin (L91)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code L91.0 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Acne scar
  • Acne scar
  • Acne scars - mixed atrophic and hypertrophic
  • Complication of cutaneous surgery
  • Disorder of skin donor site
  • Ear-lobe keloid
  • Hypertrophic acne scar
  • Hypertrophic condition of skin
  • Hypertrophic scar
  • Hypertrophic scar of upper arm
  • Hypertrophic scarring of skin donor site
  • Hypertrophic surgical scar
  • Keloid scar
  • Keloidal surgical scar

Index of Diseases and Injuries
References found for the code L91.0 in the Index of Diseases and Injuries:

Information for Patients


Also called: Cicatrix, Keloid scar

A scar is a permanent patch of skin that grows over a wound. It forms when your body heals itself after a cut, scrape, burn, or sore. You can also get scars from surgery that cuts through the skin, infections like chickenpox, or skin conditions like acne. Scars are often thicker, as well as pinker, redder, or shinier, than the rest of your skin.

How your scar looks depends on

  • How big and deep your wound is
  • Where it is
  • How long it takes to heal
  • Your age
  • Your inherited tendency to scar

Scars usually fade over time but never go away completely. If the way a scar looks bothers you, various treatments might minimize it. These include surgical revision, dermabrasion, laser treatments, injections, chemical peels, and creams.

  • Dermabrasion
  • Keloids
  • Scar revision

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