T43.63 - Poisoning by, adverse effect of and underdosing of methylphenidate T43.6 - Poisoning by, adverse effect of and underdosing of psychostimulants T43.63 - Poisoning by, adverse effect of and underdosing of methylphenidate T43.631 - Poisoning by methylphenidate, accidental (unintentional) T43.632 - Poisoning by methylphenidate, intentional self-harm T43.633 - Poisoning by methylphenidate, assault T43.634 - Poisoning by methylphenidate, undetermined T43.635 - Adverse effect of methylphenidate T43.636 - Underdosing of methylphenidate