ICD-9 Diagnosis Code 991.3

Frostbite NEC/NOS

Diagnosis Code 991.3

ICD-9: 991.3
Short Description: Frostbite NEC/NOS
Long Description: Frostbite of other and unspecified sites
This is the 2014 version of the ICD-9-CM diagnosis code 991.3

Code Classification
  • Injury and poisoning (800–999)
    • Other and unspecified effects of external causes (990-995)
      • 991 Effects of reduced temperature

Information for Medical Professionals

Convert to ICD-10 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.

  • Frostbite
  • Frostbite alopecia
  • Frostbite with tissue necrosis
  • Frostbite with tissue necrosis involving multiple body regions
  • Frostbite with tissue necrosis of abdominal wall, lower back and pelvis
  • Frostbite with tissue necrosis of ankle and foot
  • Frostbite with tissue necrosis of arm
  • Frostbite with tissue necrosis of head
  • Frostbite with tissue necrosis of hip and thigh
  • Frostbite with tissue necrosis of knee and lower leg
  • Frostbite with tissue necrosis of neck
  • Frostbite with tissue necrosis of thorax
  • Superficial frostbite
  • Superficial frostbite involving multiple body regions
  • Superficial frostbite of abdominal wall, lower back and pelvis
  • Superficial frostbite of hip and thigh
  • Superficial frostbite of knee and lower leg
  • Superficial frostbite of neck
  • Superficial frostbite of thorax
  • Superficial frostbite of upper limb

Index of Diseases and Injuries
References found for the code 991.3 in the Index of Diseases and Injuries:

Information for Patients


Frostbite is an injury to the body that is caused by freezing. It most often affects the nose, ears, cheeks, chin, fingers, or toes. Frostbite can permanently damage the body, and severe cases can lead to amputation.

Signs of frostbite include

  • A white or grayish-yellow skin area
  • Skin that feels unusually firm or waxy
  • Numbness

If you have symptoms of frostbite, seek medical care. But if immediate medical care isn't available, here are steps to take:

  • Get into a warm room as soon as possible.
  • Unless absolutely necessary, do not walk on frostbitten feet or toes. Walking increases the damage.
  • Put the affected area in warm - not hot - water.
  • You can also warm the affected area using body heat. For example, use your armpit to warm frostbitten fingers.
  • Don't rub the frostbitten area with snow or massage it at all. This can cause more damage.
  • Don't use a heating pad, heat lamp, or the heat of a stove, fireplace, or radiator for warming. Since frostbite makes an area numb, you could burn it.

Centers for Disease Control and Prevention

  • Frostbite
  • How to prevent frostbite and hypothermia

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