T49 ICD-10-CM Code: Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where T49 sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- 3
Category T49
Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
- 4
Code T49
Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
More specific choices
Codes under T49
T49 is a non-billable category. Choose the child code that best matches the documented diagnosis.
T49.0Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugs
T49.1Poisoning by, adverse effect of and underdosing of antipruritics
T49.2Poisoning by, adverse effect of and underdosing of local astringents and local detergents
T49.3Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectants
T49.4Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations
T49.5Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations
T49.6Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparations
T49.7Poisoning by, adverse effect of and underdosing of dental drugs, topically applied
T49.8Poisoning by, adverse effect of and underdosing of other topical agents
T49.9Poisoning by, adverse effect of and underdosing of unspecified topical agent
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for T49.
Code first
No “code first” instruction is listed for T49.
Use additional code
No “use additional code” instruction is listed for T49.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T49.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T49.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code T49 mean?
T49 is the FY 2027 U.S. 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 a billable or specific ICD-10-CM code?
No. T49 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is T49 located in ICD-10-CM?
T49 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (T36–T50), under category T49, Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs.
What coding notes are listed for T49?
No inclusion terms are listed for T49 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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