T65.854S
✓ Billable
Toxic effect of medetomidine, undetermined, sequela
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T65.854S
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Use additional code
- code to identify associated manifestations, such as:
- bradycardia NOS (R00.1)
- somnolence, stupor and coma (R40.-)
7th character
- The appropriate 7th character is to be added to each code from category T65
Frequently asked questions
What is ICD-10 code T65.854S?
ICD-10-CM code T65.854S represents Toxic effect of medetomidine, undetermined, sequela. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T65.854S billable?
Yes. T65.854S is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is T65.854S in?
T65.854S belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the T65 category
T65
Toxic effect of other and unspecified substances
Non-billable
T65.0
Toxic effect of cyanides
Non-billable
T65.1
Toxic effect of strychnine and its salts
Non-billable
T65.2
Toxic effect of tobacco and nicotine
Non-billable
T65.0X
Toxic effect of cyanides
Non-billable
T65.1X
Toxic effect of strychnine and its salts
Non-billable
T65.21
Toxic effect of chewing tobacco
Non-billable
T65.0X1
Toxic effect of cyanides, accidental (unintentional)
Non-billable
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