T45.0 — Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs
Is T45.0 billable?
No — T45.0 is a non-billable header code. T45.0 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 T45.0.
Billable codes under this header
- T45.0X1APoisoning by antiallergic and antiemetic drugs, accidental (unintentional), initial encounter
- T45.0X1DPoisoning by antiallergic and antiemetic drugs, accidental (unintentional), subsequent encounter
- T45.0X1SPoisoning by antiallergic and antiemetic drugs, accidental (unintentional), sequela
- T45.0X2APoisoning by antiallergic and antiemetic drugs, intentional self-harm, initial encounter
- T45.0X2DPoisoning by antiallergic and antiemetic drugs, intentional self-harm, subsequent encounter
- T45.0X2SPoisoning by antiallergic and antiemetic drugs, intentional self-harm, sequela
- T45.0X3APoisoning by antiallergic and antiemetic drugs, assault, initial encounter
- T45.0X3DPoisoning by antiallergic and antiemetic drugs, assault, subsequent encounter
- T45.0X3SPoisoning by antiallergic and antiemetic drugs, assault, sequela
- T45.0X4APoisoning by antiallergic and antiemetic drugs, undetermined, initial encounter
- T45.0X4DPoisoning by antiallergic and antiemetic drugs, undetermined, subsequent encounter
- T45.0X4SPoisoning by antiallergic and antiemetic drugs, undetermined, sequela
- T45.0X5AAdverse effect of antiallergic and antiemetic drugs, initial encounter
- T45.0X5DAdverse effect of antiallergic and antiemetic drugs, subsequent encounter
- T45.0X5SAdverse effect of antiallergic and antiemetic drugs, sequela
- T45.0X6AUnderdosing of antiallergic and antiemetic drugs, initial encounter
- T45.0X6DUnderdosing of antiallergic and antiemetic drugs, subsequent encounter
- T45.0X6SUnderdosing of antiallergic and antiemetic drugs, sequela
T45.0 at a glance
| Code | T45.0 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of antiallergic and antiemetic drugs |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with T45.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- poisoning by, adverse effect of and underdosing of phenothiazine-based neuroleptics (T43.3)
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T45.0 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 T45.0. T45.0 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T45.0 to fully describe the condition. T45.0 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 T45.0 to fully describe the condition. T45.0 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T45.0, but a patient may have both at the same time. When documentation supports it, T45.0 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T45.0, but a patient may have both at the same time. When documentation supports it, T45.0 and the excluded code may both be reported.
What codes fall under T45.0? (1)
How long has T45.0 existed?
T45.0 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 T45 family? (10)
- T45.1Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugsnot billable
- T45.2Poisoning by, adverse effect of and underdosing of vitaminsnot billable
- T45.3Poisoning by, adverse effect of and underdosing of enzymesnot billable
- T45.4Poisoning by, adverse effect of and underdosing of iron and its compoundsnot billable
- T45.5Poisoning by, adverse effect of and underdosing of anticoagulants and antithrombotic drugsnot billable
- T45.6Poisoning by, adverse effect of and underdosing of fibrinolysis-affecting drugsnot billable
- T45.7Poisoning by, adverse effect of and underdosing of anticoagulant antagonists, vitamin K and other coagulantsnot billable
- T45.8Poisoning by, adverse effect of and underdosing of other primarily systemic and hematological agentsnot billable
- T45.9Poisoning by, adverse effect of and underdosing of unspecified primarily systemic and hematological agentnot billable
- T45.APoisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugsnot billable