T56.5X4S — Toxic effect of zinc and its compounds, undetermined, sequela
Is T56.5X4S billable?
Yes — T56.5X4S is billable for FY2027. T56.5X4S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T56.5X4S may be submitted for encounters from October 1, 2026 through September 30, 2027.
T56.5X4S at a glance
| Code | T56.5X4S |
|---|---|
| Description | Toxic effect of zinc and its compounds, 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 T56.5X4S?
In T56.5X4S, the 7th character S means sequela. The 7th character is required for T56.5X4S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T56.5X4S group to?
T56.5X4S 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 T56.5X4S 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.-)
Excludes1 — never code together — inherited from T56
The conditions below can never be reported together with T56.5X4S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside T56.5X4S to fully describe the condition. T56.5X4S 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 T56.5X4S to fully describe the condition. T56.5X4S is sequenced first.
Use additional code — inherited from T56
Report an additional code alongside T56.5X4S to fully describe the condition. T56.5X4S is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T56.5X4S, but a patient may have both at the same time. When documentation supports it, T56.5X4S and the excluded code may both be reported.
How long has T56.5X4S existed?
T56.5X4S 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.