T43.3X6 - Underdosing of phenothiazine antipsychotics and neuroleptics T43.3 - Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics T43.3X - Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics T43.3X6 - Underdosing of phenothiazine antipsychotics and neuroleptics