ICD-10 Diagnosis Code L91.9

Hypertrophic disorder of the skin, unspecified

Diagnosis Code L91.9

ICD-10: L91.9
Short Description: Hypertrophic disorder of the skin, unspecified
Long Description: Hypertrophic disorder of the skin, unspecified
This is the 2018 version of the ICD-10-CM diagnosis code L91.9

Valid for Submission
The code L91.9 is valid for submission for HIPAA-covered transactions.

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)

Information for Medical Professionals

Information for Patients


Skin Conditions

Also called: Cutaneous disorders, Dermatologic disorders

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

  • Holds body fluids in, preventing dehydration
  • Keeps harmful microbes out, preventing infections
  • Helps you feel things like heat, cold, and pain
  • Keeps your body temperature even
  • Makes vitamin D when the sun shines on it

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

  • Acrodermatitis (Medical Encyclopedia)
  • Cryotherapy (Medical Encyclopedia)
  • Cutaneous skin tags (Medical Encyclopedia)
  • Dry skin -- self-care (Medical Encyclopedia)
  • Erythema multiforme (Medical Encyclopedia)
  • Granuloma annulare (Medical Encyclopedia)
  • Keratosis pilaris (Medical Encyclopedia)
  • Lichen planus (Medical Encyclopedia)
  • Milia (Medical Encyclopedia)
  • Sebaceous cyst (Medical Encyclopedia)
  • Seborrheic keratosis (Medical Encyclopedia)
  • Skin lesion removal (Medical Encyclopedia)
  • Skin lesion removal-aftercare (Medical Encyclopedia)
  • Stasis dermatitis and ulcers (Medical Encyclopedia)


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