T54.93XA — Toxic effect of unspecified corrosive substance, assault, initial encounter
Is T54.93XA billable?
Yes, but T54.93XA is an unspecified code. T54.93XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T54.93XA 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 T54.93XA — the more specific alternatives are listed below.
More specific alternatives
- T54.0X1AToxic effect of phenol and phenol homologues, accidental (unintentional), initial encounter
- T54.1X1AToxic effect of other corrosive organic compounds, accidental (unintentional), initial encounter
- T54.2X1AToxic effect of corrosive acids and acid-like substances, accidental (unintentional), initial encounter
- T54.3X1AToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), initial encounter
T54.93XA at a glance
| Code | T54.93XA |
|---|---|
| Description | Toxic effect of unspecified corrosive substance, assault, 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 T54.93XA?
In T54.93XA, the 7th character A means initial encounter. The 7th character is required for T54.93XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T54.93XA group to?
T54.93XA 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 T51-T65
The conditions below can never be reported together with T54.93XA 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 T54.93XA to fully describe the condition. T54.93XA 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 T54.93XA to fully describe the condition. T54.93XA is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T54.93XA, but a patient may have both at the same time. When documentation supports it, T54.93XA and the excluded code may both be reported.
How long has T54.93XA existed?
T54.93XA 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.