L91 - Hypertrophic disorders of skin

Version 2023
ICD-10:L91
Short Description:Hypertrophic disorders of skin
Long Description:Hypertrophic disorders of skin
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Other disorders of the skin and subcutaneous tissue (L80-L99)
      • Hypertrophic disorders of skin (L91)

L91 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of hypertrophic disorders of skin. The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Hypertrophic disorders of skin

Non-specific codes like L91 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for hypertrophic disorders of skin:

  • BILLABLE CODE - Use L91.0 for Hypertrophic scar
  • BILLABLE CODE - Use L91.8 for Other hypertrophic disorders of the skin
  • BILLABLE CODE - Use L91.9 for Hypertrophic disorder of the skin, unspecified

Patient Education


Skin Conditions

Your skin is your body's largest organ. It covers and protects your body. Your skin:

Anything that irritates, clogs, or inflames your skin can cause symptoms such as redness, swelling, burning, and itching. Allergies, irritants, your genetic makeup, and certain diseases and immune system problems can cause rashes, hives, and other skin conditions. Many skin problems, such as acne, also affect your appearance.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


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Code History