ICD-10 Diagnosis Code T30.4

Corrosion of unspecified body region, unspecified degree

Diagnosis Code T30.4

ICD-10: T30.4
Short Description: Corrosion of unspecified body region, unspecified degree
Long Description: Corrosion of unspecified body region, unspecified degree
This is the 2017 version of the ICD-10-CM diagnosis code T30.4

Code Classification
  • Injury, poisoning and certain other consequences of external causes
    • Burns and corrosions (T20-T32)
      • Burn and corrosion, body region unspecified (T30)

Information for Medical Professionals

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.

  • Acid burn of skin
  • Alkali burn of skin
  • Artefactual skin disease
  • Caustic burn of skin
  • Cement burn of skin
  • Chemical burn
  • Chemical injury of peripheral nerve
  • Corrosion of multiple regions, no more than first-degree corrosions mentioned
  • Corrosions of multiple regions, at least one corrosion of third degree mentioned
  • Corrosions of multiple regions, no more than second-degree corrosions mentioned
  • Dithranol burn
  • Factitious skin disease
  • Injury of unknown intent by local effect of caustic substance
  • Injury undetermined whether accidentally or purposely inflicted, by caustic substances, excluding poisoning
  • Phosphorus burn of skin
  • Self-inflicted caustic burn
  • Sequelae of burn and corrosion classifiable only according to extent of body surface involved
  • Sequelae of burns, corrosions and frostbite

Index of Diseases and Injuries
References found for the code T30.4 in the Index of Diseases and Injuries:

Information for Patients


A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

There are three types of burns:

  • First-degree burns damage only the outer layer of skin
  • Second-degree burns damage the outer layer and the layer underneath
  • Third-degree burns damage or destroy the deepest layer of skin and tissues underneath

Burns can cause swelling, blistering, scarring and, in serious cases, shock and even death. They also can lead to infections because they damage your skin's protective barrier. Treatment for burns depends on the cause of the burn, how deep it is, and how much of the body it covers. Antibiotic creams can prevent or treat infections. For more serious burns, treatment may be needed to clean the wound, replace the skin, and make sure the patient has enough fluids and nutrition.

NIH: National Institute of General Medical Sciences

  • Burns
  • Chemical burn or reaction
  • Minor burns - aftercare
  • Skin graft

[Read More]
Previous Code
Previous Code T30.0
Next Code
T31 Next Code