2020 ICD-10-CM Diagnosis Code T34.99

Frostbite with tissue necrosis of other sites

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • T34.99 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM T34.99 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T34.99 - other international versions of ICD-10 T34.99 may differ.
Applicable To
  • Frostbite with tissue necrosis of leg NOS
  • Frostbite with tissue necrosis of trunk NOS
The following code(s) above T34.99 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 T34.99:
  • S00-T88
    2020 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
  • T33-T34
    2020 ICD-10-CM Range T33-T34

    Frostbite

    Type 2 Excludes
    • hypothermia and other effects of reduced temperature (T68, T69.-)
    Frostbite
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

Diagnosis Index entries containing back-references to T34.99:
  • Frostbite (superficial) T33.90
    ICD-10-CM Diagnosis Code T33.90

    Superficial frostbite of unspecified sites

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Superficial frostbite NOS
    • limb
      • lower T33.99
        ICD-10-CM Diagnosis Code T33.99

        Superficial frostbite of other sites

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
        Applicable To
        • Superficial frostbite of leg NOS
        • Superficial frostbite of trunk NOS
        • with tissue necrosis T34.99
    • specified site NEC T33.99
      ICD-10-CM Diagnosis Code T33.99

      Superficial frostbite of other sites

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Superficial frostbite of leg NOS
      • Superficial frostbite of trunk NOS
      • with tissue necrosis T34.99
    • trunk T33.99
      ICD-10-CM Diagnosis Code T33.99

      Superficial frostbite of other sites

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Superficial frostbite of leg NOS
      • Superficial frostbite of trunk NOS
      • with tissue necrosis T34.99

ICD-10-CM Codes Adjacent To T34.99
T34.832S …… sequela
T34.839 Frostbite with tissue necrosis of unspecified toe(s)
T34.839A …… initial encounter
T34.839D …… subsequent encounter
T34.839S …… sequela
T34.9 Frostbite with tissue necrosis of other and unspecified sites
T34.90 Frostbite with tissue necrosis of unspecified sites
T34.90XA …… initial encounter
T34.90XD …… subsequent encounter
T34.90XS …… sequela
T34.99 Frostbite with tissue necrosis of other sites
T34.99XA …… initial encounter
T34.99XD …… subsequent encounter
T34.99XS …… sequela
T36 Poisoning by, adverse effect of and underdosing of systemic antibiotics
T36.0 Poisoning by, adverse effect of and underdosing of penicillins
T36.0X Poisoning by, adverse effect of and underdosing of penicillins
T36.0X1 Poisoning by penicillins, accidental (unintentional)
T36.0X1A …… initial encounter
T36.0X1D …… subsequent encounter
T36.0X1S …… sequela

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