ICD-10 Diagnosis Code S00.421A

Blister (nonthermal) of right ear, initial encounter

Diagnosis Code S00.421A

ICD-10: S00.421A
Short Description: Blister (nonthermal) of right ear, initial encounter
Long Description: Blister (nonthermal) of right ear, initial encounter
This is the 2017 version of the ICD-10-CM diagnosis code S00.421A

Code Classification
  • Injury, poisoning and certain other consequences of external causes
    • Injuries to the head (S00-S09)
      • Superficial injury of head (S00)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code S00.421A is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


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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