T37.4X5Header code — not billable

Adverse effect of anthelminthics

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T37
Effective date
October 1, 2026

Related codes in category T37

Frequently asked questions

What is ICD-10 code T37.4X5?

T37.4X5 is an ICD-10-CM diagnosis code for Adverse effect of anthelminthics.

Is T37.4X5 a billable code?

No. T37.4X5 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 T37.4X5 in?

T37.4X5 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T37.4X5 become effective?

T37.4X5 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T37.4X5?

T37.4X5 belongs to category T37, 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.