T43.591 — Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)
Is T43.591 billable?
No — T43.591 is a non-billable header code. T43.591 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 T43.591.
Billable codes under this header
- T43.591APoisoning by other antipsychotics and neuroleptics, accidental (unintentional), initial encounter
- T43.591DPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), subsequent encounter
- T43.591SPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), sequela
T43.591 at a glance
| Code | T43.591 |
|---|---|
| Description | Poisoning by other antipsychotics and neuroleptics, accidental (unintentional) |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to T43.591.
- Poisoning by other antipsychotics and neuroleptics NOS
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T43.591 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 T43.591 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 T43.591. T43.591 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T43.591 to fully describe the condition. T43.591 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 T43.591 to fully describe the condition. T43.591 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T43.591, but a patient may have both at the same time. When documentation supports it, T43.591 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T43.591, but a patient may have both at the same time. When documentation supports it, T43.591 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T43
The conditions below are not part of T43.591, but a patient may have both at the same time. When documentation supports it, T43.591 and the excluded code may both be reported.
What codes fall under T43.591? (3)
- T43.591APoisoning by other antipsychotics and neuroleptics, accidental (unintentional), initial encounter
- T43.591DPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), subsequent encounter
- T43.591SPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), sequela
How long has T43.591 existed?
T43.591 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)
- T43.592Poisoning by other antipsychotics and neuroleptics, intentional self-harmnot billable
- T43.593Poisoning by other antipsychotics and neuroleptics, assaultnot billable
- T43.594Poisoning by other antipsychotics and neuroleptics, undeterminednot billable
- T43.595Adverse effect of other antipsychotics and neurolepticsnot billable
- T43.596Underdosing of other antipsychotics and neurolepticsnot billable