2021 ICD-10-CM Code T30.4
Corrosion of unspecified body region, unspecified degree
Valid for Submission
T30.4 is a billable diagnosis code used to specify a medical diagnosis of corrosion of unspecified body region, unspecified degree. The code T30.4 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code T30.4 might also be used to specify conditions or terms like acid burn of skin, acute skin injury caused by corrosive substance, alkali burn of skin, artefactual skin disease, cement burn of skin , chemical burn, etc.
Unspecified diagnosis codes like T30.4 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
| ICD-10: | T30.4 |
| Short Description: | Corrosion of unspecified body region, unspecified degree |
| Long Description: | Corrosion of unspecified body region, unspecified degree |
Code Classification
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code T30.4:
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- This code is not for inpatient use. Code to specified site and degree of corrosion
- Corrosion NOS
- Multiple corrosion NOS
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code T30.4 are found in the index:
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Acid burn of skin
- Acute skin injury caused by corrosive substance
- Alkali burn of skin
- Artefactual skin disease
- Cement burn of skin
- Chemical burn
- Chemical burn of skin
- Chemical burn of skin caused by corrosive substance
- Chemical injury of peripheral nerve
- 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
Convert T30.4 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code T30.4 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
- 949.0 - Burn NOS (Approximate Flag)
Information for Patients
Burns
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 (Medical Encyclopedia)
- Chemical burn or reaction (Medical Encyclopedia)
- Minor burns - aftercare (Medical Encyclopedia)
- Skin graft (Medical Encyclopedia)
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Code History
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)