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U.S. ICD-10-CM · FY 2027

T65.851 ICD-10-CM Code: Toxic effect of medetomidine, 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

T65.851

Toxic effect of medetomidine, accidental (unintentional)

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where T65.851 sits

  1. 1

    Chapter 19

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

  2. 2

    Section

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

  3. 3

    Category T65

    Toxic effect of other and unspecified substances

  4. 4

    Subcategory T65.85

    Toxic effect of medetomidine

  5. 5

    Code T65.851

    Toxic effect of medetomidine, accidental (unintentional)

More specific choices

Codes under T65.851

T65.851 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

  • Toxic effect of medetomidine NOS

Code first

No “code first” instruction is listed for T65.851.

Use additional code

No “use additional code” instruction is listed for T65.851.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for T65.851.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for T65.851.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

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 source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code T65.851 mean?

T65.851 is the FY 2027 U.S. ICD-10-CM code for “Toxic effect of medetomidine, accidental (unintentional).”

Is T65.851 a billable or specific ICD-10-CM code?

No. T65.851 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 T65.851 located in ICD-10-CM?

T65.851 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 and subcategory T65.85, Toxic effect of medetomidine.

What coding notes are listed for T65.851?

Its listed inclusion terms are Toxic effect of medetomidine NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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