T43.594 — Poisoning by other antipsychotics and neuroleptics, undetermined
Is T43.594 billable?
No — T43.594 is a non-billable header code. T43.594 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 T43.594.
T43.594 at a glance
| Code | T43.594 |
|---|---|
| Description | Poisoning by other antipsychotics and neuroleptics, 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 T43.594 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-)
Excludes1 — never code together — inherited from T43.5
The conditions below can never be reported together with T43.594 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 rauwolfia (T46.5-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T43.594. T43.594 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.594 to fully describe the condition. T43.594 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 T43.594 to fully describe the condition. T43.594 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.594, but a patient may have both at the same time. When documentation supports it, T43.594 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.594, but a patient may have both at the same time. When documentation supports it, T43.594 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.594, but a patient may have both at the same time. When documentation supports it, T43.594 and the excluded code may both be reported.
What codes fall under T43.594? (3)
How long has T43.594 existed?
T43.594 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 T43.59 family? (5)
- T43.591Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)not billable
- T43.592Poisoning by other antipsychotics and neuroleptics, intentional self-harmnot billable
- T43.593Poisoning by other antipsychotics and neuroleptics, assaultnot billable
- T43.595Adverse effect of other antipsychotics and neurolepticsnot billable
- T43.596Underdosing of other antipsychotics and neurolepticsnot billable