T54.3 — Toxic effects of corrosive alkalis and alkali-like substances
Is T54.3 billable?
No — T54.3 is a non-billable header code. T54.3 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath T54.3.
Billable codes under this header
- T54.3X1AToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), initial encounter
- T54.3X1DToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), subsequent encounter
- T54.3X1SToxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional), sequela
- T54.3X2AToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, initial encounter
- T54.3X2DToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, subsequent encounter
- T54.3X2SToxic effect of corrosive alkalis and alkali-like substances, intentional self-harm, sequela
- T54.3X3AToxic effect of corrosive alkalis and alkali-like substances, assault, initial encounter
- T54.3X3DToxic effect of corrosive alkalis and alkali-like substances, assault, subsequent encounter
- T54.3X3SToxic effect of corrosive alkalis and alkali-like substances, assault, sequela
- T54.3X4AToxic effect of corrosive alkalis and alkali-like substances, undetermined, initial encounter
- T54.3X4DToxic effect of corrosive alkalis and alkali-like substances, undetermined, subsequent encounter
- T54.3X4SToxic effect of corrosive alkalis and alkali-like substances, undetermined, sequela
T54.3 at a glance
| Code | T54.3 |
|---|---|
| Description | Toxic effects of corrosive alkalis and alkali-like substances |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to T54.3.
- Toxic effects of potassium hydroxide
- Toxic effects of sodium hydroxide
Excludes1 — never code together — inherited from T51-T65
The conditions below can never be reported together with T54.3 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 T54.3 to fully describe the condition. T54.3 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 T54.3 to fully describe the condition. T54.3 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T54.3, but a patient may have both at the same time. When documentation supports it, T54.3 and the excluded code may both be reported.
What codes fall under T54.3? (1)
How long has T54.3 existed?
T54.3 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.