T43.204S — Poisoning by unspecified antidepressants, undetermined, sequela
Is T43.204S billable?
Yes, but T43.204S is an unspecified code. T43.204S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T43.204S is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T43.204S.
T43.204S at a glance
| Code | T43.204S |
|---|---|
| Description | Poisoning by unspecified antidepressants, undetermined, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in T43.204S?
In T43.204S, the 7th character S means sequela. The 7th character is required for T43.204S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T43.204S group to?
T43.204S 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
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T43.204S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T43.204S. T43.204S describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.204S to fully describe the condition. T43.204S is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T43.204S to fully describe the condition. T43.204S is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.204S, but a patient may have both at the same time. When documentation supports it, T43.204S and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.204S, but a patient may have both at the same time. When documentation supports it, T43.204S and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.204S, but a patient may have both at the same time. When documentation supports it, T43.204S and the excluded code may both be reported.
How long has T43.204S existed?
T43.204S has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.