T59.821 ICD-10-CM Code: Toxic effect of hexamethylene diisocyanate, accidental (unintentional)
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
T59.821Toxic effect of hexamethylene diisocyanate, accidental (unintentional)
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where T59.821 sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
- 3
Category T59
Toxic effect of other gases, fumes and vapors
- 4
Subcategory T59.82
Toxic effects of hexamethylene diisocyanate
- 5
Code T59.821
Toxic effect of hexamethylene diisocyanate, accidental (unintentional)
More specific choices
Codes under T59.821
T59.821 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
- Toxic effects of hexamethylene diisocyanate NOS
Code first
No “code first” instruction is listed for T59.821.
Use additional code
No “use additional code” instruction is listed for T59.821.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T59.821.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T59.821.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code T59.821 mean?
T59.821 is the FY 2027 U.S. ICD-10-CM code for “Toxic effect of hexamethylene diisocyanate, accidental (unintentional).”
Is T59.821 a billable or specific ICD-10-CM code?
No. T59.821 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is T59.821 located in ICD-10-CM?
T59.821 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Toxic effects of substances chiefly nonmedicinal as to source (T51-T65) (T51–T65), under category T59, Toxic effect of other gases, fumes and vapors and subcategory T59.82, Toxic effects of hexamethylene diisocyanate.
What coding notes are listed for T59.821?
Its listed inclusion terms are Toxic effects of hexamethylene diisocyanate NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
Keep exploring
Related T59.82 codes
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