T65 ICD-10-CM Code: Toxic effect of other and unspecified substances
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
T65Toxic effect of other and unspecified substances
ICD-10-CM diagnosis code · United States clinical modification
Where T65 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 T65
Toxic effect of other and unspecified substances
- 4
Code T65
Toxic effect of other and unspecified substances
Codes under T65
T65 is a non-billable category. Choose the child code that best matches the documented diagnosis.
T65.0Toxic effect of cyanidesT65.1Toxic effect of strychnine and its saltsT65.2Toxic effect of tobacco and nicotineT65.3Toxic effect of nitroderivatives and aminoderivatives of benzene and its homologuesT65.4Toxic effect of carbon disulfideT65.5Toxic effect of nitroglycerin and other nitric acids and estersT65.6Toxic effect of paints and dyes, not elsewhere classifiedT65.8Toxic effect of other specified substancesT65.9Toxic effect of unspecified substanceNotes for this code
Inclusion terms
No inclusion terms are listed for T65.
Code first
No “code first” instruction is listed for T65.
Use additional code
No “use additional code” instruction is listed for T65.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T65.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T65.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
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.
Frequently asked questions
What does ICD-10-CM code T65 mean?
T65 is the FY 2027 U.S. ICD-10-CM code for “Toxic effect of other and unspecified substances.”
Is T65 a billable or specific ICD-10-CM code?
No. T65 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 T65 located in ICD-10-CM?
T65 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 T65, Toxic effect of other and unspecified substances.
What coding notes are listed for T65?
No inclusion terms are listed for T65 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.