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ICD-10-CM · FY 2026 APRIL UPDATE

T43.4

Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene 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
T43.4XPoisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neurolepticsCategory
T43.4X1Poisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional)Category
T43.4X1APoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), initial encounterBillable
T43.4X1DPoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), subsequent encounterBillable
T43.4X1SPoisoning by butyrophenone and thiothixene neuroleptics, accidental (unintentional), sequelaBillable
T43.4X2Poisoning by butyrophenone and thiothixene neuroleptics, intentional self-harmCategory
T43.4X2APoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, initial encounterBillable
T43.4X2DPoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, subsequent encounterBillable
T43.4X2SPoisoning by butyrophenone and thiothixene neuroleptics, intentional self-harm, sequelaBillable
T43.4X3Poisoning by butyrophenone and thiothixene neuroleptics, assaultCategory
T43.4X3APoisoning by butyrophenone and thiothixene neuroleptics, assault, initial encounterBillable
T43.4X3DPoisoning by butyrophenone and thiothixene neuroleptics, assault, subsequent encounterBillable
T43.4X3SPoisoning by butyrophenone and thiothixene neuroleptics, assault, sequelaBillable
T43.4X4Poisoning by butyrophenone and thiothixene neuroleptics, undeterminedCategory
T43.4X4APoisoning by butyrophenone and thiothixene neuroleptics, undetermined, initial encounterBillable
T43.4X4DPoisoning by butyrophenone and thiothixene neuroleptics, undetermined, subsequent encounterBillable
T43.4X4SPoisoning by butyrophenone and thiothixene neuroleptics, undetermined, sequelaBillable
T43.4X5Adverse effect of butyrophenone and thiothixene neurolepticsCategory
T43.4X5AAdverse effect of butyrophenone and thiothixene neuroleptics, initial encounterBillable
T43.4X5DAdverse effect of butyrophenone and thiothixene neuroleptics, subsequent encounterBillable
T43.4X5SAdverse effect of butyrophenone and thiothixene neuroleptics, sequelaBillable
T43.4X6Underdosing of butyrophenone and thiothixene neurolepticsCategory
T43.4X6AUnderdosing of butyrophenone and thiothixene neuroleptics, initial encounterBillable
T43.4X6DUnderdosing of butyrophenone and thiothixene neuroleptics, subsequent encounterBillable
T43.4X6SUnderdosing of butyrophenone and thiothixene 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.

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