Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

T43.59

Poisoning by, adverse effect of and underdosing of other antipsychotics and neuroleptics

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T43.591Poisoning by other antipsychotics and neuroleptics, accidental (unintentional)Category
T43.591APoisoning by other antipsychotics and neuroleptics, accidental (unintentional), initial encounterBillable
T43.591DPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), subsequent encounterBillable
T43.591SPoisoning by other antipsychotics and neuroleptics, accidental (unintentional), sequelaBillable
T43.592Poisoning by other antipsychotics and neuroleptics, intentional self-harmCategory
T43.592APoisoning by other antipsychotics and neuroleptics, intentional self-harm, initial encounterBillable
T43.592DPoisoning by other antipsychotics and neuroleptics, intentional self-harm, subsequent encounterBillable
T43.592SPoisoning by other antipsychotics and neuroleptics, intentional self-harm, sequelaBillable
T43.593Poisoning by other antipsychotics and neuroleptics, assaultCategory
T43.593APoisoning by other antipsychotics and neuroleptics, assault, initial encounterBillable
T43.593DPoisoning by other antipsychotics and neuroleptics, assault, subsequent encounterBillable
T43.593SPoisoning by other antipsychotics and neuroleptics, assault, sequelaBillable
T43.594Poisoning by other antipsychotics and neuroleptics, undeterminedCategory
T43.594APoisoning by other antipsychotics and neuroleptics, undetermined, initial encounterBillable
T43.594DPoisoning by other antipsychotics and neuroleptics, undetermined, subsequent encounterBillable
T43.594SPoisoning by other antipsychotics and neuroleptics, undetermined, sequelaBillable
T43.595Adverse effect of other antipsychotics and neurolepticsCategory
T43.595AAdverse effect of other antipsychotics and neuroleptics, initial encounterBillable
T43.595DAdverse effect of other antipsychotics and neuroleptics, subsequent encounterBillable
T43.595SAdverse effect of other antipsychotics and neuroleptics, sequelaBillable
T43.596Underdosing of other antipsychotics and neurolepticsCategory
T43.596AUnderdosing of other antipsychotics and neuroleptics, initial encounterBillable
T43.596DUnderdosing of other antipsychotics and neuroleptics, subsequent encounterBillable
T43.596SUnderdosing of other antipsychotics and neuroleptics, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.