T39.2X5Header code — not billable

Adverse effect of pyrazolone derivatives

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T39
Effective date
October 1, 2026

Related codes in category T39

Frequently asked questions

What is ICD-10 code T39.2X5?

T39.2X5 is an ICD-10-CM diagnosis code for Adverse effect of pyrazolone derivatives.

Is T39.2X5 a billable code?

No. T39.2X5 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 T39.2X5 in?

T39.2X5 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T39.2X5 become effective?

T39.2X5 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T39.2X5?

T39.2X5 belongs to category T39, 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.