T57.8X4D — Toxic effect of other specified inorganic substances, undetermined, subsequent encounter
Is T57.8X4D billable?
Yes, but T57.8X4D is an unspecified code. T57.8X4D is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T57.8X4D 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 T57.8X4D — the more specific alternatives are listed below.
More specific alternatives
- T57.0X1DToxic effect of arsenic and its compounds, accidental (unintentional), subsequent encounter
- T57.1X1DToxic effect of phosphorus and its compounds, accidental (unintentional), subsequent encounter
- T57.2X1DToxic effect of manganese and its compounds, accidental (unintentional), subsequent encounter
- T57.3X1DToxic effect of hydrogen cyanide, accidental (unintentional), subsequent encounter
T57.8X4D at a glance
| Code | T57.8X4D |
|---|---|
| Description | Toxic effect of other specified inorganic substances, undetermined, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in T57.8X4D?
In T57.8X4D, the 7th character D means subsequent encounter. The 7th character is required for T57.8X4D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T57.8X4D group to?
T57.8X4D sits in MDC 23 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.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T57.8X4D 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 T57.8X4D to fully describe the condition. T57.8X4D 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 T57.8X4D to fully describe the condition. T57.8X4D is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T57.8X4D, but a patient may have both at the same time. When documentation supports it, T57.8X4D and the excluded code may both be reported.
How long has T57.8X4D existed?
T57.8X4D 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.