T49.4X4Header code — not billable

Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, undetermined

Short description: Poisoning by keratolyt/keratplst/hair trmt drug, undet

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T49
Effective date
October 1, 2026

Related codes in category T49

T49Topical skin/eye/ENT/dental drugsT49.0Local antifungal, anti-infective and anti-inflammatory drugsT49.0XLocal antifungal, anti-infective and anti-inflammatory drugsT49.0X1Poisoning by local antifung/infect/inflamm drugs, accT49.0X1APoisoning by local antifung/infect/inflamm drugs, acc, initYesT49.0X1DPoisoning by local antifung/infect/inflamm drugs, acc, subsYesT49.0X1SPoisn by local antifung/infect/inflamm drugs, acc, sequelaYesT49.0X2Poisoning by local antifung/infect/inflamm drugs, self-harmT49.0X2APoisn by local antifung/infect/inflamm drugs, slf-hrm, initYesT49.0X2DPoisn by local antifung/infect/inflamm drugs, slf-hrm, subsYesT49.0X2SPoisn by local antifung/infect/inflamm drugs, slf-hrm, sqlaYesT49.0X3Poisoning by local antifung/infect/inflamm drugs, assault

Frequently asked questions

What is ICD-10 code T49.4X4?

T49.4X4 is an ICD-10-CM diagnosis code for Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, undetermined.

Is T49.4X4 a billable code?

No. T49.4X4 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 T49.4X4 in?

T49.4X4 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T49.4X4 become effective?

T49.4X4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T49.4X4?

T49.4X4 belongs to category T49, 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.