T49 Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM 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 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T36-T50: Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
Category T49
80 codes (60 billable)
FY2026 Status
Stable since FY2024
Includes
  • poisoning by, adverse effect of and underdosing of glucocorticoids, topically used

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference T49 with the canonical source and edition:

T49 — Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T49

Canonical URL: https://icd10codingpro.com/codes/T49

Related Codes

All Codes in T49

Every most-specific code under T49 Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs (60 codes):

Show the complete T49 code list
T49.0X1 Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional) T49.0X2 Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm T49.0X3 Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, assault T49.0X4 Poisoning by local antifungal, anti-infective and anti-inflammatory drugs, undetermined T49.0X5 Adverse effect of local antifungal, anti-infective and anti-inflammatory drugs T49.0X6 Underdosing of local antifungal, anti-infective and anti-inflammatory drugs T49.1X1 Poisoning by antipruritics, accidental (unintentional) T49.1X2 Poisoning by antipruritics, intentional self-harm T49.1X3 Poisoning by antipruritics, assault T49.1X4 Poisoning by antipruritics, undetermined T49.1X5 Adverse effect of antipruritics T49.1X6 Underdosing of antipruritics T49.2X1 Poisoning by local astringents and local detergents, accidental (unintentional) T49.2X2 Poisoning by local astringents and local detergents, intentional self-harm T49.2X3 Poisoning by local astringents and local detergents, assault T49.2X4 Poisoning by local astringents and local detergents, undetermined T49.2X5 Adverse effect of local astringents and local detergents T49.2X6 Underdosing of local astringents and local detergents T49.3X1 Poisoning by emollients, demulcents and protectants, accidental (unintentional) T49.3X2 Poisoning by emollients, demulcents and protectants, intentional self-harm T49.3X3 Poisoning by emollients, demulcents and protectants, assault T49.3X4 Poisoning by emollients, demulcents and protectants, undetermined T49.3X5 Adverse effect of emollients, demulcents and protectants T49.3X6 Underdosing of emollients, demulcents and protectants T49.4X1 Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, accidental (unintentional) T49.4X2 Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, intentional self-harm T49.4X3 Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, assault T49.4X4 Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, undetermined T49.4X5 Adverse effect of keratolytics, keratoplastics, and other hair treatment drugs and preparations T49.4X6 Underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations T49.5X1 Poisoning by ophthalmological drugs and preparations, accidental (unintentional) T49.5X2 Poisoning by ophthalmological drugs and preparations, intentional self-harm T49.5X3 Poisoning by ophthalmological drugs and preparations, assault T49.5X4 Poisoning by ophthalmological drugs and preparations, undetermined T49.5X5 Adverse effect of ophthalmological drugs and preparations T49.5X6 Underdosing of ophthalmological drugs and preparations T49.6X1 Poisoning by otorhinolaryngological drugs and preparations, accidental (unintentional) T49.6X2 Poisoning by otorhinolaryngological drugs and preparations, intentional self-harm T49.6X3 Poisoning by otorhinolaryngological drugs and preparations, assault T49.6X4 Poisoning by otorhinolaryngological drugs and preparations, undetermined T49.6X5 Adverse effect of otorhinolaryngological drugs and preparations T49.6X6 Underdosing of otorhinolaryngological drugs and preparations T49.7X1 Poisoning by dental drugs, topically applied, accidental (unintentional) T49.7X2 Poisoning by dental drugs, topically applied, intentional self-harm T49.7X3 Poisoning by dental drugs, topically applied, assault T49.7X4 Poisoning by dental drugs, topically applied, undetermined T49.7X5 Adverse effect of dental drugs, topically applied T49.7X6 Underdosing of dental drugs, topically applied T49.8X1 Poisoning by other topical agents, accidental (unintentional) T49.8X2 Poisoning by other topical agents, intentional self-harm T49.8X3 Poisoning by other topical agents, assault T49.8X4 Poisoning by other topical agents, undetermined T49.8X5 Adverse effect of other topical agents T49.8X6 Underdosing of other topical agents T49.91 Poisoning by unspecified topical agent, accidental (unintentional) T49.92 Poisoning by unspecified topical agent, intentional self-harm T49.93 Poisoning by unspecified topical agent, assault T49.94 Poisoning by unspecified topical agent, undetermined T49.95 Adverse effect of unspecified topical agent T49.96 Underdosing of unspecified topical agent
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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