T65.851S — Toxic effect of medetomidine, accidental (unintentional), sequela
Is T65.851S billable?
Yes — T65.851S is billable for FY2027. T65.851S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T65.851S may be submitted for encounters from October 1, 2026 through September 30, 2027. T65.851S is new in FY2027.
T65.851S at a glance
| Code | T65.851S |
|---|---|
| Description | Toxic effect of medetomidine, accidental (unintentional), sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
| FY2027 change | New in FY2027 |
What does the 7th character "S" mean in T65.851S?
In T65.851S, the 7th character S means sequela. The 7th character is required for T65.851S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T65.851S group to?
T65.851S sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
- 923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical
Inclusion terms
Alternative wording in documentation that is classified to T65.851S.
- Toxic effect of medetomidine NOS
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T65.851S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- contact with and (suspected) exposure to toxic substances (Z77.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside T65.851S to fully describe the condition. T65.851S is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T51-T65
Report an additional code alongside T65.851S to fully describe the condition. T65.851S is sequenced first.
Use additional code — inherited from T65.85
Report an additional code alongside T65.851S to fully describe the condition. T65.851S is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T65.851S, but a patient may have both at the same time. When documentation supports it, T65.851S and the excluded code may both be reported.