T41.204A — Poisoning by unspecified general anesthetics, undetermined, initial encounter
Is T41.204A billable?
Yes, but T41.204A is an unspecified code. T41.204A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T41.204A 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 T41.204A — the more specific alternatives are listed below.
More specific alternatives
- T41.0X1APoisoning by inhaled anesthetics, accidental (unintentional), initial encounter
- T41.1X1APoisoning by intravenous anesthetics, accidental (unintentional), initial encounter
- T41.3X1APoisoning by local anesthetics, accidental (unintentional), initial encounter
- T41.5X1APoisoning by therapeutic gases, accidental (unintentional), initial encounter
T41.204A at a glance
| Code | T41.204A |
|---|---|
| Description | Poisoning by unspecified general anesthetics, undetermined, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T41.204A?
In T41.204A, the 7th character A means initial encounter. The 7th character is required for T41.204A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T41.204A group to?
T41.204A 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.
- 917Poisoning and Toxic Effects of Drugs with MCCmedical
- 918Poisoning and Toxic Effects of Drugs without MCCmedical
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T41.204A 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-)
Excludes1 — never code together — inherited from T41
The conditions below can never be reported together with T41.204A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T41.204A. T41.204A describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T41.204A to fully describe the condition. T41.204A 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 T41.204A to fully describe the condition. T41.204A is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T41.204A, but a patient may have both at the same time. When documentation supports it, T41.204A and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T41.204A, but a patient may have both at the same time. When documentation supports it, T41.204A and the excluded code may both be reported.
How long has T41.204A existed?
T41.204A 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.