T49Header code — not billable

Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs

Short description: Topical skin/eye/ENT/dental drugs

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

Related codes in category T49

T49.0Local 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, assaultT49.0X3APoisn by local antifung/infect/inflamm drugs, assault, initYes

Frequently asked questions

What is ICD-10 code T49?

T49 is an ICD-10-CM diagnosis code for Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs.

Is T49 a billable code?

No. T49 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 in?

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

When did T49 become effective?

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

What other codes are related to T49?

T49 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.