Is T43.5 a billable code?
No. T43.5 is a header code that groups 36 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T43.5: Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T43.5 groups related diagnoses under poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T43.5
- T43.501APoisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional), initial encounter
- T43.501DPoisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional), subsequent encounter
- T43.501SPoisoning by unspecified antipsychotics and neuroleptics, accidental (unintentional), sequela
- T43.502APoisoning by unspecified antipsychotics and neuroleptics, intentional self-harm, initial encounter
- T43.502DPoisoning by unspecified antipsychotics and neuroleptics, intentional self-harm, subsequent encounter
- T43.502SPoisoning by unspecified antipsychotics and neuroleptics, intentional self-harm, sequela
- T43.503APoisoning by unspecified antipsychotics and neuroleptics, assault, initial encounter
- T43.503DPoisoning by unspecified antipsychotics and neuroleptics, assault, subsequent encounter
- T43.503SPoisoning by unspecified antipsychotics and neuroleptics, assault, sequela
- T43.504APoisoning by unspecified antipsychotics and neuroleptics, undetermined, initial encounter
- T43.504DPoisoning by unspecified antipsychotics and neuroleptics, undetermined, subsequent encounter
- T43.504SPoisoning by unspecified antipsychotics and neuroleptics, undetermined, sequela
- T43.505AAdverse effect of unspecified antipsychotics and neuroleptics, initial encounter
- T43.505DAdverse effect of unspecified antipsychotics and neuroleptics, subsequent encounter
- T43.505SAdverse effect of unspecified antipsychotics and neuroleptics, sequela
- T43.506AUnderdosing of unspecified antipsychotics and neuroleptics, initial encounter
- T43.506DUnderdosing of unspecified antipsychotics and neuroleptics, subsequent encounter
- T43.506SUnderdosing of unspecified antipsychotics and neuroleptics, sequela
- 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
- T43.592APoisoning by other antipsychotics and neuroleptics, intentional self-harm, initial encounter
- T43.592DPoisoning by other antipsychotics and neuroleptics, intentional self-harm, subsequent encounter
- T43.592SPoisoning by other antipsychotics and neuroleptics, intentional self-harm, sequela
- T43.593APoisoning by other antipsychotics and neuroleptics, assault, initial encounter
- T43.593DPoisoning by other antipsychotics and neuroleptics, assault, subsequent encounter
- T43.593SPoisoning by other antipsychotics and neuroleptics, assault, sequela
- T43.594APoisoning by other antipsychotics and neuroleptics, undetermined, initial encounter
- T43.594DPoisoning by other antipsychotics and neuroleptics, undetermined, subsequent encounter
- T43.594SPoisoning by other antipsychotics and neuroleptics, undetermined, sequela
- T43.595AAdverse effect of other antipsychotics and neuroleptics, initial encounter
- T43.595DAdverse effect of other antipsychotics and neuroleptics, subsequent encounter
- T43.595SAdverse effect of other antipsychotics and neuroleptics, sequela
- T43.596AUnderdosing of other antipsychotics and neuroleptics, initial encounter
- T43.596DUnderdosing of other antipsychotics and neuroleptics, subsequent encounter
- T43.596SUnderdosing of other antipsychotics and neuroleptics, sequela
Other codes in T43 Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
- T43.0Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressantsheader
- T43.1Poisoning by, adverse effect of and underdosing of monoamine-oxidase-inhibitor antidepressantsheader
- T43.2Poisoning by, adverse effect of and underdosing of other and unspecified antidepressantsheader
- T43.3Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neurolepticsheader
- T43.4Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neurolepticsheader
- T43.6Poisoning by, adverse effect of and underdosing of psychostimulantsheader
- T43.8Poisoning by, adverse effect of and underdosing of other psychotropic drugsheader
- T43.9Poisoning by, adverse effect of and underdosing of unspecified psychotropic drugheader
T43.5 questions
What does T43.5 mean?
T43.5 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.