2021 ICD-10-CM Diagnosis Code T21.3

Burn of third degree of trunk

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • T21.3 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM T21.3 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of T21.3 - other international versions of ICD-10 T21.3 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • external cause code to identify the source, place and intent of the burn (
    ICD-10-CM Diagnosis Code X00

    Exposure to uncontrolled fire in building or structure

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code First
    • any associated cataclysm
    Includes
    • conflagration in building or structure
    Type 2 Excludes
    • Exposure to ignition or melting of nightwear (X05)
    • Exposure to ignition or melting of other clothing and apparel (X06.-)
    • Exposure to other specified smoke, fire and flames (X08.-)
    X00
    -
    ICD-10-CM Diagnosis Code X19

    Contact with other heat and hot substances

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • objects that are not normally hot, e.g., an object made hot by a house fire (X00-X08)
    X19
    ,
    ICD-10-CM Diagnosis Code X75

    Intentional self-harm by explosive material

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    X75
    -
    ICD-10-CM Diagnosis Code X77

    Intentional self-harm by steam, hot vapors and hot objects

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    X77
    ,
    ICD-10-CM Diagnosis Code X96

    Assault by explosive material

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • incendiary device (X97)
    • terrorism involving explosive material (Y38.2-)
    X96
    -
    ICD-10-CM Diagnosis Code X98

    Assault by steam, hot vapors and hot objects

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    X98
    ,
    ICD-10-CM Diagnosis Code Y92

    Place of occurrence of the external cause

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • The following category is for use, when relevant, to identify the place of occurrence of the external cause. Use in conjunction with an activity code.
    • Place of occurrence should be recorded only at the initial encounter for treatment
    Y92
    )
The following code(s) above T21.3 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 T21.3:
  • S00-T88
    2021 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
  • T20-T25
    2021 ICD-10-CM Range T20-T25

    Burns and corrosions of external body surface, specified by site

    Includes
    • burns and corrosions of first degree [erythema]
    • burns and corrosions of second degree [blisters][epidermal loss]
    • burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]
    Use Additional
    • code from category T31 or T32 to identify extent of body surface involved
    Burns and corrosions of external body surface, specified by site
  • T21
    ICD-10-CM Diagnosis Code T21

    Burn and corrosion of trunk

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • burns and corrosion of hip region
    Type 2 Excludes
    • burns and corrosion of axilla (T22.- with fifth character 4)
    • burns and corrosion of scapular region (T22.- with fifth character 6)
    • burns and corrosion of shoulder (T22.- with fifth character 5)
    Burn and corrosion of trunk
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
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To T21.3
T21.26XD …… subsequent encounter
T21.26XS …… sequela
T21.27 Burn of second degree of female genital region
T21.27XA …… initial encounter
T21.27XD …… subsequent encounter
T21.27XS …… sequela
T21.29 Burn of second degree of other site of trunk
T21.29XA …… initial encounter
T21.29XD …… subsequent encounter
T21.29XS …… sequela
T21.3 Burn of third degree of trunk
T21.30 Burn of third degree of trunk, unspecified site
T21.30XA …… initial encounter
T21.30XD …… subsequent encounter
T21.30XS …… sequela
T21.31 Burn of third degree of chest wall
T21.31XA …… initial encounter
T21.31XD …… subsequent encounter
T21.31XS …… sequela
T21.32 Burn of third degree of abdominal wall
T21.32XA …… initial encounter

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