T45.8X4 — Poisoning by other primarily systemic and hematological agents, undetermined
Is T45.8X4 billable?
No — T45.8X4 is a non-billable header code. T45.8X4 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 3 billable codes beneath T45.8X4.
Billable codes under this header
- T45.8X4APoisoning by other primarily systemic and hematological agents, undetermined, initial encounter
- T45.8X4DPoisoning by other primarily systemic and hematological agents, undetermined, subsequent encounter
- T45.8X4SPoisoning by other primarily systemic and hematological agents, undetermined, sequela
T45.8X4 at a glance
| Code | T45.8X4 |
|---|---|
| Description | Poisoning by other primarily systemic and hematological agents, undetermined |
| 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 T45.8X4 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 T45.8X4. T45.8X4 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T45.8X4 to fully describe the condition. T45.8X4 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 T45.8X4 to fully describe the condition. T45.8X4 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T45.8X4, but a patient may have both at the same time. When documentation supports it, T45.8X4 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T45.8X4, but a patient may have both at the same time. When documentation supports it, T45.8X4 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T45.8
The conditions below are not part of T45.8X4, but a patient may have both at the same time. When documentation supports it, T45.8X4 and the excluded code may both be reported.
What codes fall under T45.8X4? (3)
- T45.8X4APoisoning by other primarily systemic and hematological agents, undetermined, initial encounter
- T45.8X4DPoisoning by other primarily systemic and hematological agents, undetermined, subsequent encounter
- T45.8X4SPoisoning by other primarily systemic and hematological agents, undetermined, sequela
How long has T45.8X4 existed?
T45.8X4 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 T45.8X family? (5)
- T45.8X1Poisoning by other primarily systemic and hematological agents, accidental (unintentional)not billable
- T45.8X2Poisoning by other primarily systemic and hematological agents, intentional self-harmnot billable
- T45.8X3Poisoning by other primarily systemic and hematological agents, assaultnot billable
- T45.8X5Adverse effect of other primarily systemic and hematological agentsnot billable
- T45.8X6Underdosing of other primarily systemic and hematological agentsnot billable