ICD-10 Diagnosis Code L43.9

Lichen planus, unspecified

Diagnosis Code L43.9

ICD-10: L43.9
Short Description: Lichen planus, unspecified
Long Description: Lichen planus, unspecified
This is the 2018 version of the ICD-10-CM diagnosis code L43.9

Valid for Submission
The code L43.9 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Papulosquamous disorders (L40-L45)
      • Lichen planus (L43)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code L43.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


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.

  • Conjunctivitis associated with autoimmune skin disorder
  • Conjunctivitis due to lichen planus
  • Eruption of vulva
  • Genital lichen planus
  • Guttate lichen planus
  • Lichen planus
  • Lichen planus of glans penis
  • Lichen planus of lips
  • Lichen planus of nail
  • Lichen planus of palms and soles
  • Lichen planus of penis
  • Lichen planus of scalp
  • Lichen planus of tongue
  • Lichen planus of vulva
  • Lichen planus-lupus erythematosus overlap
  • Linear lichen planus
  • Nail pterygium in lichen planus
  • Onychatrophy due to lichen planus
  • Onychoatrophy
  • Oral lichen planus
  • Papular oral lichen planus
  • Poikiloderma
  • Poikiloderma due to lichen planus
  • Post-inflammatory hyperpigmentation
  • Post-inflammatory hyperpigmentation in lichen planus
  • Postinflammatory skin pigmentation change
  • Site-specific lichen planus
  • Vulvovaginal gingival syndrome

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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