Is T43.4 a billable code?
No. T43.4 is a header code that groups 18 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T43.4: Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neuroleptics
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T43.4 groups related diagnoses under poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neuroleptics. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T43.4
- T43.4X1APoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), initial encounter
- T43.4X1DPoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), subsequent encounter
- T43.4X1SPoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), sequela
- T43.4X2APoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, initial encounter
- T43.4X2DPoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, subsequent encounter
- T43.4X2SPoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, sequela
- T43.4X3APoisoning by butyrophenone and thiothixene neuroleptics, assault, initial encounter
- T43.4X3DPoisoning by butyrophenone and thiothixene neuroleptics, assault, subsequent encounter
- T43.4X3SPoisoning by butyrophenone and thiothixene neuroleptics, assault, sequela
- T43.4X4APoisoning by butyrophenone and thiothixene neuroleptics, undetermined, initial encounter
- T43.4X4DPoisoning by butyrophenone and thiothixene neuroleptics, undetermined, subsequent encounter
- T43.4X4SPoisoning by butyrophenone and thiothixene neuroleptics, undetermined, sequela
- T43.4X5AAdverse effect of butyrophenone and thiothixene neuroleptics, initial encounter
- T43.4X5DAdverse effect of butyrophenone and thiothixene neuroleptics, subsequent encounter
- T43.4X5SAdverse effect of butyrophenone and thiothixene neuroleptics, sequela
- T43.4X6AUnderdosing of butyrophenone and thiothixene neuroleptics, initial encounter
- T43.4X6DUnderdosing of butyrophenone and thiothixene neuroleptics, subsequent encounter
- T43.4X6SUnderdosing of butyrophenone and thiothixene 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
- T43.5Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and 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
T43.4 questions
What does T43.4 mean?
T43.4 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene 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.