Is ICD-10-CM code T64 billable?

No, T64 (Toxic effect of aflatoxin and other mycotoxin food contaminants) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code T64 belong to?

T64 belongs to Chapter 19 of the ICD-10-CM tabular list: S00–T88 (Injury, Poisoning and Certain Other Consequences of External Causes).

T64Non-billable

Toxic effect of aflatoxin and other mycotoxin food contaminants

Injury, Poisoning and Certain Other Consequences of External Causes·Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)·category·FY 2026

Use a more specific code (0 billable, 2 non-billable)

T64.0Toxic effect of aflatoxinhas subcodes T64.8Toxic effect of other mycotoxin food contaminantshas subcodes

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Use Additional Code

code to identify any retained foreign body, if applicable (Z18.-)

T51-T65 Parent Instructions

Excludes1(Not coded here. Use a different code.)

contact with and (suspected) exposure to toxic substances (Z77.-)

Use Additional Code

code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
personal history of foreign body fully removed (Z87.821)
to identify any retained foreign body, if applicable (Z18.-)

Clinical Hierarchy

BillableHas subcodes

CH19Injury, poisoning and certain other consequences of external causes (S00-T88)

T51-T65Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)

T64Toxic effect of aflatoxin and other mycotoxin food contaminantsNot billable

T64.0Toxic effect of aflatoxinSubcodes

T64.8Toxic effect of other mycotoxin food contaminantsSubcodes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.