T49.5 — Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations
Is T49.5 billable?
No — T49.5 is a non-billable header code. T49.5 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 18 billable codes beneath T49.5.
Billable codes under this header
- T49.5X1APoisoning by ophthalmological drugs and preparations, accidental (unintentional), initial encounter
- T49.5X1DPoisoning by ophthalmological drugs and preparations, accidental (unintentional), subsequent encounter
- T49.5X1SPoisoning by ophthalmological drugs and preparations, accidental (unintentional), sequela
- T49.5X2APoisoning by ophthalmological drugs and preparations, intentional self-harm, initial encounter
- T49.5X2DPoisoning by ophthalmological drugs and preparations, intentional self-harm, subsequent encounter
- T49.5X2SPoisoning by ophthalmological drugs and preparations, intentional self-harm, sequela
- T49.5X3APoisoning by ophthalmological drugs and preparations, assault, initial encounter
- T49.5X3DPoisoning by ophthalmological drugs and preparations, assault, subsequent encounter
- T49.5X3SPoisoning by ophthalmological drugs and preparations, assault, sequela
- T49.5X4APoisoning by ophthalmological drugs and preparations, undetermined, initial encounter
- T49.5X4DPoisoning by ophthalmological drugs and preparations, undetermined, subsequent encounter
- T49.5X4SPoisoning by ophthalmological drugs and preparations, undetermined, sequela
- T49.5X5AAdverse effect of ophthalmological drugs and preparations, initial encounter
- T49.5X5DAdverse effect of ophthalmological drugs and preparations, subsequent encounter
- T49.5X5SAdverse effect of ophthalmological drugs and preparations, sequela
- T49.5X6AUnderdosing of ophthalmological drugs and preparations, initial encounter
- T49.5X6DUnderdosing of ophthalmological drugs and preparations, subsequent encounter
- T49.5X6SUnderdosing of ophthalmological drugs and preparations, sequela
T49.5 at a glance
| Code | T49.5 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T49.5 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 T49.5. T49.5 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T49.5 to fully describe the condition. T49.5 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 T49.5 to fully describe the condition. T49.5 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T49.5, but a patient may have both at the same time. When documentation supports it, T49.5 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T49.5, but a patient may have both at the same time. When documentation supports it, T49.5 and the excluded code may both be reported.
What codes fall under T49.5? (1)
How long has T49.5 existed?
T49.5 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.
What other codes are in the T49 family? (9)
- 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
- T49.6Poisoning 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