T65.85: Toxic effect of medetomidine

New code · FY2027

Not billable: this is a header. Use one of the more specific codes below.

• New code, effective October 1, 2026 (FY2027).

Code breakdown

Coding notes

Use additional code

• code to identify associated manifestations, such as:
• bradycardia NOS (R00.1)
• somnolence, stupor and coma (R40.-)

7th character (from T65)

• The appropriate 7th character is to be added to each code from category T65

7th characters (category T65)

• A initial encounter
• D subsequent encounter
• S sequela

Codes under T65.85

• T65.851 Toxic effect of medetomidine, accidental (unintentional)
• T65.852 Toxic effect of medetomidine, intentional self-harm
• T65.853 Toxic effect of medetomidine, assault
• T65.854 Toxic effect of medetomidine, undetermined

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.