T49 — Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs
Not billable
Is T49 billable?
No — T49 is a non-billable header code. T49 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath T49.
Billable codes under this header
- T49.91XAPoisoning by unspecified topical agent, accidental (unintentional), initial encounter
- T49.91XDPoisoning by unspecified topical agent, accidental (unintentional), subsequent encounter
- T49.91XSPoisoning by unspecified topical agent, accidental (unintentional), sequela
- T49.92XAPoisoning by unspecified topical agent, intentional self-harm, initial encounter
- T49.92XDPoisoning by unspecified topical agent, intentional self-harm, subsequent encounter
- T49.92XSPoisoning by unspecified topical agent, intentional self-harm, sequela
- T49.93XAPoisoning by unspecified topical agent, assault, initial encounter
- T49.93XDPoisoning by unspecified topical agent, assault, subsequent encounter
- T49.93XSPoisoning by unspecified topical agent, assault, sequela
- T49.94XAPoisoning by unspecified topical agent, undetermined, initial encounter
- T49.94XDPoisoning by unspecified topical agent, undetermined, subsequent encounter
- T49.94XSPoisoning by unspecified topical agent, undetermined, sequela
- T49.95XAAdverse effect of unspecified topical agent, initial encounter
- T49.95XDAdverse effect of unspecified topical agent, subsequent encounter
- T49.95XSAdverse effect of unspecified topical agent, sequela
- T49.96XAUnderdosing of unspecified topical agent, initial encounter
- T49.96XDUnderdosing of unspecified topical agent, subsequent encounter
- T49.96XSUnderdosing of unspecified topical agent, sequela
- T49.0X1APoisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), initial encounter
- T49.0X1DPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), subsequent encounter
- T49.0X1SPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, accidental (unintentional), sequela
- T49.0X2APoisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, initial encounter
- T49.0X2DPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, subsequent encounter
- T49.0X2SPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, intentional self-harm, sequela
- T49.0X3APoisoning by local antifungal, anti-infective and anti-inflammatory drugs, assault, initial encounter
- T49.0X3DPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, assault, subsequent encounter
- T49.0X3SPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, assault, sequela
- T49.0X4APoisoning by local antifungal, anti-infective and anti-inflammatory drugs, undetermined, initial encounter
- T49.0X4DPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, undetermined, subsequent encounter
- T49.0X4SPoisoning by local antifungal, anti-infective and anti-inflammatory drugs, undetermined, sequela
- T49.0X5AAdverse effect of local antifungal, anti-infective and anti-inflammatory drugs, initial encounter
- T49.0X5DAdverse effect of local antifungal, anti-infective and anti-inflammatory drugs, subsequent encounter
- T49.0X5SAdverse effect of local antifungal, anti-infective and anti-inflammatory drugs, sequela
- T49.0X6AUnderdosing of local antifungal, anti-infective and anti-inflammatory drugs, initial encounter
- T49.0X6DUnderdosing of local antifungal, anti-infective and anti-inflammatory drugs, subsequent encounter
- T49.0X6SUnderdosing of local antifungal, anti-infective and anti-inflammatory drugs, sequela
- T49.1X1APoisoning by antipruritics, accidental (unintentional), initial encounter
- T49.1X1DPoisoning by antipruritics, accidental (unintentional), subsequent encounter
- T49.1X1SPoisoning by antipruritics, accidental (unintentional), sequela
- T49.1X2APoisoning by antipruritics, intentional self-harm, initial encounter
- T49.1X2DPoisoning by antipruritics, intentional self-harm, subsequent encounter
- T49.1X2SPoisoning by antipruritics, intentional self-harm, sequela
- T49.1X3APoisoning by antipruritics, assault, initial encounter
- T49.1X3DPoisoning by antipruritics, assault, subsequent encounter
- T49.1X3SPoisoning by antipruritics, assault, sequela
- T49.1X4APoisoning by antipruritics, undetermined, initial encounter
- T49.1X4DPoisoning by antipruritics, undetermined, subsequent encounter
- T49.1X4SPoisoning by antipruritics, undetermined, sequela
- T49.1X5AAdverse effect of antipruritics, initial encounter
- T49.1X5DAdverse effect of antipruritics, subsequent encounter
- T49.1X5SAdverse effect of antipruritics, sequela
- T49.1X6AUnderdosing of antipruritics, initial encounter
- T49.1X6DUnderdosing of antipruritics, subsequent encounter
- T49.1X6SUnderdosing of antipruritics, sequela
- T49.2X1APoisoning by local astringents and local detergents, accidental (unintentional), initial encounter
- T49.2X1DPoisoning by local astringents and local detergents, accidental (unintentional), subsequent encounter
- T49.2X1SPoisoning by local astringents and local detergents, accidental (unintentional), sequela
- T49.2X2APoisoning by local astringents and local detergents, intentional self-harm, initial encounter
- T49.2X2DPoisoning by local astringents and local detergents, intentional self-harm, subsequent encounter
- T49.2X2SPoisoning by local astringents and local detergents, intentional self-harm, sequela
T49 at a glance
| Code | T49 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Includes
Conditions classified to T49.
- poisoning by, adverse effect of and underdosing of glucocorticoids, topically used
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T49 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T49. T49 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T49 to fully describe the condition. T49 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T49 to fully describe the condition. T49 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T49, but a patient may have both at the same time. When documentation supports it, T49 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T49, but a patient may have both at the same time. When documentation supports it, T49 and the excluded code may both be reported.
What codes fall under T49? (10)
- T49.0Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugsnot billable
- T49.1Poisoning by, adverse effect of and underdosing of antipruriticsnot billable
- T49.2Poisoning by, adverse effect of and underdosing of local astringents and local detergentsnot billable
- T49.3Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectantsnot billable
- T49.4Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparationsnot billable
- T49.5Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparationsnot billable
- T49.6Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparationsnot billable
- T49.7Poisoning by, adverse effect of and underdosing of dental drugs, topically appliednot billable
- T49.8Poisoning by, adverse effect of and underdosing of other topical agentsnot billable
- T49.9Poisoning by, adverse effect of and underdosing of unspecified topical agentnot billable
How long has T49 existed?
T49 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.