T54.3X4S
✓ Billable
Toxic effect of corrosive alkalis and alkali-like substances, undetermined, sequela
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T54.3X4S
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code T54.3X4S?
ICD-10-CM code T54.3X4S represents Toxic effect of corrosive alkalis and alkali-like substances, undetermined, sequela. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T54.3X4S billable?
Yes. T54.3X4S is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is T54.3X4S in?
T54.3X4S belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the T54 category
T54
Toxic effect of corrosive substances
Non-billable
T54.0
Toxic effects of phenol and phenol homologues
Non-billable
T54.1
Toxic effects of other corrosive organic compounds
Non-billable
T54.2
Toxic effects of corrosive acids and acid-like substances
Non-billable
T54.3
Toxic effects of corrosive alkalis and alkali-like substances
Non-billable
T54.9
Toxic effects of unspecified corrosive substance
Non-billable
T54.0X
Toxic effects of phenol and phenol homologues
Non-billable
T54.1X
Toxic effects of other corrosive organic compounds
Non-billable
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