2026 ICD-10-CM Diagnosis Code T64.82XSToxic effect of other mycotoxin food contaminants, intentional self-harm, sequela
T64.82XS is a billable ICD-10-CM diagnosis code for toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Mental and substance use disorders; sequela; and Poisoning/toxic effect/adverse effects/underdosing, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T64.82XS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Toxic effect of aflatoxin and other mycotoxin food contaminants (T64). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Mycotoxins
toxic compounds produced by fungi.
Table of Drugs and ChemicalsClinical
Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.
| Substance | Accidental | Self-harm | Assault | Undetermined | Adverse Effect | Underdosing |
|---|---|---|---|---|---|---|
| Ergot NEC | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Ergot NEC::derivative | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Ergot NEC::medicinal (alkaloids) | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Ergot NEC::prepared | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Mycotoxins | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Mycotoxins::aflatoxin | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
| Mycotoxins::specified NEC | T64.81 | T64.82 | T64.83 | T64.84 | – | – |
Patient EducationClinical
Molds
Molds are fungi that can be found both outdoors and indoors. They grow best in warm, damp and humid conditions. If you have damp or wet spots in your house, you will probably get mold.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T64.82XS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T64.82XSOverview
Is T64.82XS a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T64.82XS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the toxic effect of other mycotoxin food contaminants, intentional self-harm itself has resolved, not the original event.
What MS-DRG does T64.82XS group to?
When toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 922, 923, with relative weights from 1.0177 to 1.7494 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T64.82XS exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela on inpatient claims.
What is the ICD-9 equivalent of T64.82XS?
Under the General Equivalence Mappings, toxic effect of other mycotoxin food contaminants, intentional self-harm, sequela converts to ICD-9-CM 909.1 (late eff nonmed substanc) and E959 (late eff of self-injury). The mapping is approximate, so confirm the match fits the documentation.
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.
