T52.2X4Header code — not billable

Toxic effect of homologues of benzene, undetermined

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T52
Effective date
October 1, 2026

Related codes in category T52

Frequently asked questions

What is ICD-10 code T52.2X4?

T52.2X4 is an ICD-10-CM diagnosis code for Toxic effect of homologues of benzene, undetermined.

Is T52.2X4 a billable code?

No. T52.2X4 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 T52.2X4 in?

T52.2X4 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T52.2X4 become effective?

T52.2X4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T52.2X4?

T52.2X4 belongs to category T52, 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.