T54.0X4Header code — not billable
Toxic effect of phenol and phenol homologues, undetermined
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T54
- Effective date
- October 1, 2026
Related codes in category T54
T54Toxic effect of corrosive substancesT54.0Toxic effects of phenol and phenol homologuesT54.0XToxic effects of phenol and phenol homologuesT54.0X1Toxic effect of phenol and phenol homologues, accidentalT54.0X1AToxic effect of phenol and phenol homologues, acc, initYesT54.0X1DToxic effect of phenol and phenol homologues, acc, subsYesT54.0X1SToxic effect of phenol and phenol homologues, acc, sequelaYesT54.0X2Toxic effect of phenol and phenol homologues, self-harmT54.0X2AToxic effect of phenol and phenol homolog, self-harm, initYesT54.0X2DToxic effect of phenol and phenol homolog, self-harm, subsYesT54.0X2SToxic effect of phenol and phenol homolog, slf-hrm, sequelaYesT54.0X3Toxic effect of phenol and phenol homologues, assault
Frequently asked questions
What is ICD-10 code T54.0X4?
T54.0X4 is an ICD-10-CM diagnosis code for Toxic effect of phenol and phenol homologues, undetermined.
Is T54.0X4 a billable code?
No. T54.0X4 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T54.0X4 in?
T54.0X4 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T54.0X4 become effective?
T54.0X4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T54.0X4?
T54.0X4 belongs to category T54, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.