2024 ICD-10-CM Diagnosis Code T78.1XXA

Other adverse food reactions, not elsewhere classified, initial encounter

ICD-10-CM Code:
T78.1XXA
ICD-10 Code for:
Oth adverse food reactions, not elsewhere classified, init
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Other and unspecified effects of external causes
      (T66-T78)
      • Adverse effects, not elsewhere classified
        (T78)

T78.1XXA is a billable diagnosis code used to specify a medical diagnosis of other adverse food reactions, not elsewhere classified, initial encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

T78.1XXA is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like other adverse food reactions not elsewhere classified. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Adverse drug interaction
  • Adverse medication interaction with food
  • Adverse reaction to chewing gum additive
  • Adverse reaction to fig
  • Adverse reaction to food
  • Adverse reaction to food additive
  • Allergic angioedema
  • Allergic angioedema
  • Allergic angioedema due to ingested food
  • Allergic bronchospasm caused by dietary substance
  • Allergic reaction caused by egg protein
  • Allergic reaction caused by fish
  • Allergic reaction caused by food additive
  • Allergic reaction caused by fruit
  • Allergic reaction caused by peanut
  • Allergic reaction caused by seafood
  • Allergic reaction caused by seed
  • Allergic reaction caused by shellfish
  • Allergic reaction caused by tree nut
  • Allergic reaction to food
  • Allergic urticaria due to ingested food
  • Allergy to food
  • Bronchospasm
  • Enteral and supplement feeds adverse reaction
  • Food-induced angioedema-urticaria
  • Hypersensitivity reaction caused by food
  • Medication interaction with food
  • Non-allergic hypersensitivity reaction caused by sulfite

Clinical Classification

Clinical Information

  • Bronchospasm

    sudden contraction of the smooth muscles of the bronchial wall.
  • Bronchospasm, CTCAE|Bronchospasm|Bronchospasm

    a disorder characterized by a sudden contraction of the smooth muscles of the bronchial wall.
  • Exercise-Induced Bronchospasm|Exercise induced bronchospasm

    sudden contraction of the smooth muscles of the bronchial wall that occurs during or following exercise.
  • Grade 1 Bronchospasm, CTCAE|Grade 1 Bronchospasm

    mild symptoms; intervention not indicated
  • Grade 2 Bronchospasm, CTCAE|Grade 2 Bronchospasm

    symptomatic; medical intervention indicated; limiting instrumental adl
  • Grade 3 Bronchospasm, CTCAE|Grade 3 Bronchospasm

    limiting self care adl; supplemental oxygen indicated
  • Grade 4 Bronchospasm, CTCAE|Grade 4 Bronchospasm

    life-threatening respiratory or hemodynamic compromise; intubation or urgent intervention indicated
  • Grade 5 Bronchospasm, CTCAE|Grade 5 Bronchospasm

    death

Coding Guidelines

The appropriate 7th character is to be added to each code from block Adverse effects, not elsewhere classified (T78). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Convert T78.1XXA to ICD-9-CM

  • ICD-9-CM Code: 988.9 - Tox eff noxious food NOS
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
  • ICD-9-CM Code: 995.7 - Adverse food react NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Food Allergy

Food allergy is an abnormal response to a food triggered by your body's immune system.

In adults, the foods that most often trigger allergic reactions include fish, shellfish, peanuts, and tree nuts, such as walnuts. Problem foods for children can include eggs, milk, peanuts, tree nuts, soy, and wheat.

The allergic reaction may be mild. In rare cases it can cause a severe reaction called anaphylaxis. Symptoms of food allergy include:

  • Itching or swelling in your mouth
  • Vomiting, diarrhea, or abdominal cramps and pain
  • Hives or eczema
  • Tightening of the throat and trouble breathing
  • Drop in blood pressure

Your health care provider may use a detailed history, elimination diet, and skin and blood tests to diagnose a food allergy.

When you have food allergies, you must be prepared to treat an accidental exposure. Wear a medical alert bracelet or necklace, and carry an auto-injector device containing epinephrine (adrenaline).

You can only prevent the symptoms of food allergy by avoiding the food. After you and your health care provider have identified the foods to which you are sensitive, you must remove them from your diet.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.