2021

  1. ICD-10-CM Codes
    2. ›
  2. S00-T88 Injury, poisoning and certain other consequences of external causes
    3. ›
  3. T66-T78 Other and unspecified effects of external causes
    4. ›
  4. T78- Adverse effects, not elsewhere classified
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code T78.0

2021 ICD-10-CM Diagnosis Code T78.0

Anaphylactic reaction due to food

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • T78.0 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 T78.0 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of T78.0 - other international versions of ICD-10 T78.0 may differ.
Applicable To
  • Anaphylactic reaction due to adverse food reaction
  • Anaphylactic shock or reaction due to nonpoisonous foods
  • Anaphylactoid reaction due to food
The following code(s) above T78.0 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 T78.0:
  • 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
  • T78
    ICD-10-CM Diagnosis Code T78

    Adverse effects, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of surgical and medical care NEC (T80-T88)
    Adverse effects, not elsewhere classified
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
Code annotations containing back-references to T78.0:
  • Type 1 Excludes: T88.6
    , T61
    , T62
    , T78.1
    , T78.1
    , T78.2
    , T79.4
    , R57
    ICD-10-CM Diagnosis Code T88.6

    Anaphylactic reaction due to adverse effect of correct drug or medicament properly administered

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Anaphylactic shock due to adverse effect of correct drug or medicament properly administered
    • Anaphylactoid reaction NOS
    Type 1 Excludes
    • anaphylactic reaction due to serum (T80.5-)
    • anaphylactic shock or reaction due to adverse food reaction (T78.0-)
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    ICD-10-CM Diagnosis Code T61

    Toxic effect of noxious substances eaten as seafood

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • allergic reaction to food, such as:
    • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
    • bacterial foodborne intoxications (A05.-)
    • dermatitis (L23.6, L25.4, L27.2)
    • food protein-induced enterocolitis syndrome (K52.21)
    • food protein-induced enteropathy (K52.22)
    • gastroenteritis (noninfective) (K52.29)
    • toxic effect of aflatoxin and other mycotoxins (T64)
    • toxic effect of cyanides (T65.0-)
    • toxic effect of harmful algae bloom (T65.82-)
    • toxic effect of hydrogen cyanide (T57.3-)
    • toxic effect of mercury (T56.1-)
    • toxic effect of red tide (T65.82-)
    ICD-10-CM Diagnosis Code T62

    Toxic effect of other noxious substances eaten as food

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • allergic reaction to food, such as:
    • anaphylactic shock (reaction) due to adverse food reaction (T78.0-)
    • bacterial food borne intoxications (A05.-)
    • dermatitis (L23.6, L25.4, L27.2)
    • food protein-induced enterocolitis syndrome (K52.21)
    • food protein-induced enteropathy (K52.22)
    • gastroenteritis (noninfective) (K52.29)
    • toxic effect of aflatoxin and other mycotoxins (T64)
    • toxic effect of cyanides (T65.0-)
    • toxic effect of hydrogen cyanide (T57.3-)
    • toxic effect of mercury (T56.1-)
    ICD-10-CM Diagnosis Code T78.1

    Other adverse food reactions, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
    • anaphylactic reaction due to food (T78.0-)
    • bacterial food borne intoxications (A05.-)
    Type 2 Excludes
    • allergic and dietetic gastroenteritis and colitis (K52.29)
    • allergic rhinitis due to food (J30.5)
    • dermatitis due to food in contact with skin (L23.6, L24.6, L25.4)
    • dermatitis due to ingested food (L27.2)
    • food protein-induced enterocolitis syndrome (K52.21)
    • food protein-induced enteropathy (K52.22)
    Use Additional
    • code to identify the type of reaction, if applicable
    ICD-10-CM Diagnosis Code T78.1

    Other adverse food reactions, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
    • anaphylactic reaction due to food (T78.0-)
    • bacterial food borne intoxications (A05.-)
    Type 2 Excludes
    • allergic and dietetic gastroenteritis and colitis (K52.29)
    • allergic rhinitis due to food (J30.5)
    • dermatitis due to food in contact with skin (L23.6, L24.6, L25.4)
    • dermatitis due to ingested food (L27.2)
    • food protein-induced enterocolitis syndrome (K52.21)
    • food protein-induced enteropathy (K52.22)
    Use Additional
    • code to identify the type of reaction, if applicable
    ICD-10-CM Diagnosis Code T78.2

    Anaphylactic shock, unspecified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Allergic shock
    • Anaphylactic reaction
    • Anaphylaxis
    Type 1 Excludes
    • anaphylactic reaction or shock due to adverse effect of correct medicinal substance properly administered (T88.6)
    • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
    • anaphylactic reaction or shock due to serum (T80.5-)
    ICD-10-CM Diagnosis Code T79.4

    Traumatic shock

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Shock (immediate) (delayed) following injury
    Type 1 Excludes
    • anaphylactic shock due to adverse food reaction (T78.0-)
    • anaphylactic shock due to correct medicinal substance properly administered (T88.6)
    • anaphylactic shock due to serum (T80.5-)
    • anaphylactic shock NOS (T78.2)
    • anesthetic shock (T88.2)
    • electric shock (T75.4)
    • nontraumatic shock NEC (R57.-)
    • obstetric shock (O75.1)
    • postprocedural shock (T81.1-)
    • septic shock (R65.21)
    • shock complicating abortion or ectopic or molar pregnancy (O00-O07, O08.3)
    • shock due to lightning (T75.01)
    • shock NOS (R57.9)
    ICD-10-CM Diagnosis Code R57

    Shock, not elsewhere classified

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • anaphylactic shock NOS (T78.2)
    • anaphylactic reaction or shock due to adverse food reaction (T78.0-)
    • anaphylactic shock due to adverse effect of correct drug or medicament properly administered (T88.6)
    • anaphylactic shock due to serum (T80.5-)
    • anesthetic shock (T88.3)
    • electric shock (T75.4)
    • obstetric shock (O75.1)
    • postprocedural shock (T81.1-)
    • psychic shock (F43.0)
    • shock complicating or following ectopic or molar pregnancy (O00-O07, O08.3)
    • shock due to lightning (T75.01)
    • traumatic shock (T79.4)
    • toxic shock syndrome (A48.3)
  • Type 2 Excludes: L27
    ICD-10-CM Diagnosis Code L27

    Dermatitis due to substances taken internally

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    • adverse food reaction, except dermatitis (T78.0-T78.1)
    • contact dermatitis (L23-L25)
    • drug photoallergic response (L56.1)
    • drug phototoxic response (L56.0)
    • urticaria (L50.-)
ICD-10-CM Codes Adjacent To T78.0
T76.9 Unspecified maltreatment, suspected
T76.91 Unspecified adult maltreatment, suspected
T76.91XA …… initial encounter
T76.91XD …… subsequent encounter
T76.91XS …… sequela
T76.92 Unspecified child maltreatment, suspected
T76.92XA …… initial encounter
T76.92XD …… subsequent encounter
T76.92XS …… sequela
T78 Adverse effects, not elsewhere classified
T78.0 Anaphylactic reaction due to food
T78.00 Anaphylactic reaction due to unspecified food
T78.00XA …… initial encounter
T78.00XD …… subsequent encounter
T78.00XS …… sequela
T78.01 Anaphylactic reaction due to peanuts
T78.01XA …… initial encounter
T78.01XD …… subsequent encounter
T78.01XS …… sequela
T78.02 Anaphylactic reaction due to shellfish (crustaceans)
T78.02XA …… initial encounter

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

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