ICD-10-CM > S00-T88 > T36-T50 > T43 > T43.3 T43.3 Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics Non-Billable/Non-Specific Codes T43.3XPoisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neurolepticsT43.3X1Poisoning by phenothiazine antipsychotics and neuroleptics, accidental (unintentional)T43.3X1A..., initial encounterT43.3X1D..., subsequent encounterT43.3X1S..., sequelaT43.3X2Poisoning by phenothiazine antipsychotics and neuroleptics, intentional self-harmT43.3X2A..., initial encounterT43.3X2D..., subsequent encounterT43.3X2S..., sequelaT43.3X3Poisoning by phenothiazine antipsychotics and neuroleptics, assaultT43.3X3A..., initial encounterT43.3X3D..., subsequent encounterT43.3X3S..., sequelaT43.3X4Poisoning by phenothiazine antipsychotics and neuroleptics, undeterminedT43.3X4A..., initial encounterT43.3X4D..., subsequent encounterT43.3X4S..., sequelaT43.3X5Adverse effect of phenothiazine antipsychotics and neurolepticsT43.3X5A..., initial encounterT43.3X5D..., subsequent encounterT43.3X5S..., sequelaT43.3X6Underdosing of phenothiazine antipsychotics and neurolepticsT43.3X6A..., initial encounterT43.3X6D..., subsequent encounterT43.3X6S..., sequela