ICD-10 Diagnosis Code L42

Pityriasis rosea

Diagnosis Code L42

ICD-10: L42
Short Description: Pityriasis rosea
Long Description: Pityriasis rosea
This is the 2017 version of the ICD-10-CM diagnosis code L42

Code Classification
  • Diseases of the skin and subcutaneous tissue
    • Papulosquamous disorders (L40-L45)
      • Pityriasis rosea (L42)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code L42 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.

  • Pityriasis rosea
  • Pityriasis rosea-like drug eruption

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

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