T43.591: Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)
T43.591 is a non-billable header ICD-10-CM code for poisoning by other antipsychotics and neuroleptics, accidental (unintentional). It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T43
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Poisoning by other antipsychotics and neuroleptics NOS
Excludes1 inherited from the categories above T43.591
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above T43.591
Not part of this code, but both may be coded when both are present.
Written on T43: Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T43.591
3 child codes. Green means billable.
- 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
Other codes under T43.59
- T43.592Poisoning by other antipsychotics and neuroleptics, intentional self-harm
- T43.593Poisoning by other antipsychotics and neuroleptics, assault
- T43.594Poisoning by other antipsychotics and neuroleptics, undetermined
- T43.595Adverse effect of other antipsychotics and neuroleptics
- T43.596Underdosing of other antipsychotics and neuroleptics