2019 ICD-10-CM Diagnosis Code T30.4

Corrosion of unspecified body region, unspecified degree

    2016 2017 2018 2019 Billable/Specific Code
  • T30.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM T30.4 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of T30.4 - other international versions of ICD-10 T30.4 may differ.
Applicable To
  • This code is not for inpatient use. Code to specified site and degree of corrosion
  • Corrosion NOS
  • Multiple corrosion NOS
The following code(s) above T30.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T30.4:
  • S00-T88
    2019 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
Approximate Synonyms
  • Chemical burn
ICD-10-CM T30.4 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 935 Non-extensive burns

Convert T30.4 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change

Diagnosis Index entries containing back-references to T30.4:
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) T30.4

ICD-10-CM Codes Adjacent To T30.4
T28.919 Corrosions of unspecified ear drum
T28.919A …… initial encounter
T28.919D …… subsequent encounter
T28.919S …… sequela
T28.99 Corrosions of other internal organs
T28.99XA …… initial encounter
T28.99XD …… subsequent encounter
T28.99XS …… sequela
T30 Burn and corrosion, body region unspecified
T30.0 Burn of unspecified body region, unspecified degree
T30.4 Corrosion of unspecified body region, unspecified degree
T31 Burns classified according to extent of body surface involved
T31.0 Burns involving less than 10% of body surface
T31.1 Burns involving 10-19% of body surface
T31.10 …… with 0% to 9% third degree burns
T31.11 …… with 10-19% third degree burns
T31.2 Burns involving 20-29% of body surface
T31.20 …… with 0% to 9% third degree burns
T31.21 …… with 10-19% third degree burns
T31.22 …… with 20-29% third degree burns
T31.3 Burns involving 30-39% of body surface

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.