T54.94XS — Toxic effect of unspecified corrosive substance, undetermined, sequela
Is T54.94XS billable?
Yes, but T54.94XS is an unspecified code. T54.94XS is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T54.94XS 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 T54.94XS — the more specific alternatives are listed below.
More specific alternatives
- T54.0X1SToxic effect of phenol and phenol homologues, accidental (unintentional), sequela
- T54.1X1SToxic effect of other corrosive organic compounds, accidental (unintentional), sequela
- T54.2X1SToxic effect of corrosive acids and acid-like substances, accidental (unintentional), sequela
- T54.3X1SToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), sequela
T54.94XS at a glance
| Code | T54.94XS |
|---|---|
| Description | Toxic effect of unspecified corrosive substance, 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 T54.94XS?
In T54.94XS, the 7th character S means sequela. The 7th character is required for T54.94XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T54.94XS group to?
T54.94XS 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 T51-T65
The conditions below can never be reported together with T54.94XS 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 T54.94XS to fully describe the condition. T54.94XS 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 T54.94XS to fully describe the condition. T54.94XS is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T54.94XS, but a patient may have both at the same time. When documentation supports it, T54.94XS and the excluded code may both be reported.
How long has T54.94XS existed?
T54.94XS 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.