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  5. Toxic effect of aflatoxin and other mycotoxin food contaminants (T64)

Toxic effect of aflatoxin and other mycotoxin food contaminants (T64)

The ICD-10 code section T64 covers diagnoses related to toxic effects from aflatoxin and other mycotoxin contaminants found in food. These codes distinguish between accidental, intentional, assault-related, and undetermined poisonings caused by these harmful substances.

This coding group is used to document and classify poisoning from aflatoxin specifically (e.g., T64.0 series) and from other mycotoxin contaminants (e.g., T64.8 series). For example, the ICD-10 code for toxic effect of aflatoxin, accidental (T64.01XA), includes conditions often described as accidental ingestion of aflatoxin. Similarly, the toxic effects of other mycotoxins; such as ochratoxicosis, ergotism, and Penicillium-related toxicoses; are captured under codes like T64.81XA. These codes allow classification by encounter type (initial, subsequent, or sequela) and intent (accidental, self-harm, assault, or undetermined). Utilizing this section helps accurately identify and track the cause and nature of toxic exposure to mycotoxins, which is vital for effective patient care and toxin management.

  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)

        • Toxic effect of aflatoxin and other mycotoxin food contaminants (T64)

        • T64 Toxic effect of aflatoxin and other mycotoxin food contaminants
        • T64.0 Toxic effect of aflatoxin
        • T64.01 Toxic effect of aflatoxin, accidental (unintentional)
        • T64.01XA Toxic effect of aflatoxin, accidental (unintentional), initial encounter
        • T64.01XD Toxic effect of aflatoxin, accidental (unintentional), subsequent encounter
        • T64.01XS Toxic effect of aflatoxin, accidental (unintentional), sequela
        • T64.02 Toxic effect of aflatoxin, intentional self-harm
        • T64.02XA Toxic effect of aflatoxin, intentional self-harm, initial encounter
        • T64.02XD Toxic effect of aflatoxin, intentional self-harm, subsequent encounter
        • T64.02XS Toxic effect of aflatoxin, intentional self-harm, sequela
        • T64.03 Toxic effect of aflatoxin, assault
        • T64.03XA Toxic effect of aflatoxin, assault, initial encounter
        • T64.03XD Toxic effect of aflatoxin, assault, subsequent encounter
        • T64.03XS Toxic effect of aflatoxin, assault, sequela
        • T64.04 Toxic effect of aflatoxin, undetermined
        • T64.04XA Toxic effect of aflatoxin, undetermined, initial encounter
        • T64.04XD Toxic effect of aflatoxin, undetermined, subsequent encounter
        • T64.04XS Toxic effect of aflatoxin, undetermined, sequela
        • T64.8 Toxic effect of other mycotoxin food contaminants
        • T64.81 Toxic effect of other mycotoxin food contaminants, accidental (unintentional)
        • T64.81XA Toxic effect of other mycotoxin food contaminants, accidental (unintentional), initial encounter
        • T64.81XD Toxic effect of other mycotoxin food contaminants, accidental (unintentional), subsequent encounter
        • T64.81XS Toxic effect of other mycotoxin food contaminants, accidental (unintentional), sequela
        • T64.82 Toxic effect of other mycotoxin food contaminants, intentional self-harm
        • T64.82XA Toxic effect of other mycotoxin food contaminants, intentional self-harm, initial encounter
        • T64.82XD Toxic effect of other mycotoxin food contaminants, intentional self-harm, subsequent encounter
        • T64.82XS Toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela
        • T64.83 Toxic effect of other mycotoxin food contaminants, assault
        • T64.83XA Toxic effect of other mycotoxin food contaminants, assault, initial encounter
        • T64.83XD Toxic effect of other mycotoxin food contaminants, assault, subsequent encounter
        • T64.83XS Toxic effect of other mycotoxin food contaminants, assault, sequela
        • T64.84 Toxic effect of other mycotoxin food contaminants, undetermined
        • T64.84XA Toxic effect of other mycotoxin food contaminants, undetermined, initial encounter
        • T64.84XD Toxic effect of other mycotoxin food contaminants, undetermined, subsequent encounter
        • T64.84XS Toxic effect of other mycotoxin food contaminants, undetermined, sequela

Instructional Notations

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

  • The appropriate 7th character is to be added to each code from category T64

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

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

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Ergotism

Poisoning caused by ingesting ergotized grain or by the misdirected or excessive use of ergot as a medicine.

Mycotoxins

Toxic compounds produced by FUNGI.