T42 | 
		  | 
		Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs   | 
	
	
		 |  | 
		
	
		| Excludes2 | 
		drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.--F19.-)
  | 
	 
	
		| char7Note | 
		The appropriate 7th character is to be added to each code from category T42
  | 
	 
	
		| char7Def | 
		A: initial encounter D: subsequent encounter S: sequela
  | 
	 
 
 | 
	
 |  | 
	
		 T42.0 | 
		 | 
		Poisoning by, adverse effect of and underdosing of hydantoin derivatives | 
	 
 |  | 
	
		 T42.0X | 
		 | 
		Poisoning by, adverse effect of and underdosing of hydantoin derivatives | 
	 
 |  | 
	
		 T42.0X1 | 
		  | 
		Poisoning by hydantoin derivatives, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by hydantoin derivatives NOS |   
 | 
	   |   |  | 
	
		 T42.0X2 | 
		 | 
		Poisoning by hydantoin derivatives, intentional self-harm | 
	 
  |   |  | 
	
		 T42.0X3 | 
		 | 
		Poisoning by hydantoin derivatives, assault | 
	 
  |   |  | 
	
		 T42.0X4 | 
		 | 
		Poisoning by hydantoin derivatives, undetermined | 
	 
  |   |  | 
	
		 T42.0X5 | 
		 | 
		Adverse effect of hydantoin derivatives | 
	 
  |   |  | 
	
		 T42.0X6 | 
		 | 
		Underdosing of hydantoin derivatives | 
	 
  |    |    | 
 |  | 
	
		 T42.1 | 
		  | 
		Poisoning by, adverse effect of and underdosing of iminostilbenes | 
	 
	
		 |  | 
		
| Poisoning by, adverse effect of and underdosing of carbamazepine |   
 | 
	  |  | 
	
		 T42.1X | 
		 | 
		Poisoning by, adverse effect of and underdosing of iminostilbenes | 
	 
 |  | 
	
		 T42.1X1 | 
		  | 
		Poisoning by iminostilbenes, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by iminostilbenes NOS |   
 | 
	   |   |  | 
	
		 T42.1X2 | 
		 | 
		Poisoning by iminostilbenes, intentional self-harm | 
	 
  |   |  | 
	
		 T42.1X3 | 
		 | 
		Poisoning by iminostilbenes, assault | 
	 
  |   |  | 
	
		 T42.1X4 | 
		 | 
		Poisoning by iminostilbenes, undetermined | 
	 
  |   |  | 
	
		 T42.1X5 | 
		 | 
		Adverse effect of iminostilbenes | 
	 
  |   |  | 
	
		 T42.1X6 | 
		 | 
		Underdosing of iminostilbenes | 
	 
  |    |    | 
 |  | 
	
		 T42.2 | 
		 | 
		Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones | 
	 
 |  | 
	
		 T42.2X | 
		 | 
		Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones | 
	 
 |  | 
	
		 T42.2X1 | 
		  | 
		Poisoning by succinimides and oxazolidinediones, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by succinimides and oxazolidinediones NOS |   
 | 
	   |   |  | 
	
		 T42.2X2 | 
		 | 
		Poisoning by succinimides and oxazolidinediones, intentional self-harm | 
	 
  |   |  | 
	
		 T42.2X3 | 
		 | 
		Poisoning by succinimides and oxazolidinediones, assault | 
	 
  |   |  | 
	
		 T42.2X4 | 
		 | 
		Poisoning by succinimides and oxazolidinediones, undetermined | 
	 
  |   |  | 
	
		 T42.2X5 | 
		 | 
		Adverse effect of succinimides and oxazolidinediones | 
	 
  |   |  | 
	
		 T42.2X6 | 
		 | 
		Underdosing of succinimides and oxazolidinediones | 
	 
  |    |    | 
 |  | 
	
		 T42.3 | 
		  | 
		Poisoning by, adverse effect of and underdosing of barbiturates | 
	 
	
		 |  | 
		
	
		| Excludes1 | 
		poisoning by, adverse effect of and underdosing of thiobarbiturates (T41.1-)
  | 
	 
 
 | 
	  |  | 
	
		 T42.3X | 
		 | 
		Poisoning by, adverse effect of and underdosing of barbiturates | 
	 
 |  | 
	
		 T42.3X1 | 
		  | 
		Poisoning by barbiturates, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by barbiturates NOS |   
 | 
	   |   |  | 
	
		 T42.3X2 | 
		 | 
		Poisoning by barbiturates, intentional self-harm | 
	 
  |   |  | 
	
		 T42.3X3 | 
		 | 
		Poisoning by barbiturates, assault | 
	 
  |   |  | 
	
		 T42.3X4 | 
		 | 
		Poisoning by barbiturates, undetermined | 
	 
  |   |  | 
	
		 T42.3X5 | 
		 | 
		Adverse effect of barbiturates | 
	 
  |   |  | 
	
		 T42.3X6 | 
		 | 
		Underdosing of barbiturates | 
	 
  |    |    | 
 |  | 
	
		 T42.4 | 
		 | 
		Poisoning by, adverse effect of and underdosing of benzodiazepines | 
	 
 |  | 
	
		 T42.4X | 
		 | 
		Poisoning by, adverse effect of and underdosing of benzodiazepines | 
	 
 |  | 
	
		 T42.4X1 | 
		  | 
		Poisoning by benzodiazepines, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by benzodiazepines NOS |   
 | 
	   |   |  | 
	
		 T42.4X2 | 
		 | 
		Poisoning by benzodiazepines, intentional self-harm | 
	 
  |   |  | 
	
		 T42.4X3 | 
		 | 
		Poisoning by benzodiazepines, assault | 
	 
  |   |  | 
	
		 T42.4X4 | 
		 | 
		Poisoning by benzodiazepines, undetermined | 
	 
  |   |  | 
	
		 T42.4X5 | 
		 | 
		Adverse effect of benzodiazepines | 
	 
  |   |  | 
	
		 T42.4X6 | 
		 | 
		Underdosing of benzodiazepines | 
	 
  |    |    | 
 |  | 
	
		 T42.5 | 
		 | 
		Poisoning by, adverse effect of and underdosing of mixed antiepileptics | 
	 
 |  | 
	
		 T42.5X | 
		 | 
		Poisoning by, adverse effect of and underdosing of antiepileptics | 
	 
 |  | 
	
		 T42.5X1 | 
		  | 
		Poisoning by mixed antiepileptics, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by mixed antiepileptics NOS |   
 | 
	   |   |  | 
	
		 T42.5X2 | 
		 | 
		Poisoning by mixed antiepileptics, intentional self-harm | 
	 
  |   |  | 
	
		 T42.5X3 | 
		 | 
		Poisoning by mixed antiepileptics, assault | 
	 
  |   |  | 
	
		 T42.5X4 | 
		 | 
		Poisoning by mixed antiepileptics, undetermined | 
	 
  |   |  | 
	
		 T42.5X5 | 
		 | 
		Adverse effect of mixed antiepileptics | 
	 
  |   |  | 
	
		 T42.5X6 | 
		 | 
		Underdosing of mixed antiepileptics | 
	 
  |    |    | 
 |  | 
	
		 T42.6 | 
		  | 
		Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs | 
	 
	
		 |  | 
		
| Poisoning by, adverse effect of and underdosing of methaqualone |  | Poisoning by, adverse effect of and underdosing of valproic acid |  	
		| Excludes1 | 
		poisoning by, adverse effect of and underdosing of carbamazepine (T42.1-)
  | 
	 
 
 | 
	  |  | 
	
		 T42.6X | 
		 | 
		Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs | 
	 
 |  | 
	
		 T42.6X1 | 
		  | 
		Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by other antiepileptic and sedative-hypnotic drugs NOS |   
 | 
	   |   |  | 
	
		 T42.6X2 | 
		 | 
		Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm | 
	 
  |   |  | 
	
		 T42.6X3 | 
		 | 
		Poisoning by other antiepileptic and sedative-hypnotic drugs, assault | 
	 
  |   |  | 
	
		 T42.6X4 | 
		 | 
		Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined | 
	 
  |   |  | 
	
		 T42.6X5 | 
		 | 
		Adverse effect of other antiepileptic and sedative-hypnotic drugs | 
	 
  |   |  | 
	
		 T42.6X6 | 
		 | 
		Underdosing of other antiepileptic and sedative-hypnotic drugs | 
	 
  |    |    | 
 |  | 
	
		 T42.7 | 
		 | 
		Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugs | 
	 
 |  | 
	
		 T42.71 | 
		  | 
		Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by antiepileptic and sedative-hypnotic drugs NOS |   
 | 
	   |   |  | 
	
		 T42.72 | 
		 | 
		Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm | 
	 
  |   |  | 
	
		 T42.73 | 
		 | 
		Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault | 
	 
  |   |  | 
	
		 T42.74 | 
		 | 
		Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined | 
	 
  |   |  | 
	
		 T42.75 | 
		 | 
		Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs | 
	 
  |   |  | 
	
		 T42.76 | 
		 | 
		Underdosing of unspecified antiepileptic and sedative-hypnotic drugs | 
	 
  |    | 
 |  | 
	
		 T42.8 | 
		  | 
		Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants | 
	 
	
		 |  | 
		
| Poisoning by, adverse effect of and underdosing of amantadine |   
 | 
	  |  | 
	
		 T42.8X | 
		 | 
		Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants | 
	 
 |  | 
	
		 T42.8X1 | 
		  | 
		Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional) | 
	 
	
		 |  | 
		
| Poisoning by antiparkinsonism drugs and other central muscle-tone depressants NOS |   
 | 
	   |   |  | 
	
		 T42.8X2 | 
		 | 
		Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm | 
	 
  |   |  | 
	
		 T42.8X3 | 
		 | 
		Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault | 
	 
  |   |  | 
	
		 T42.8X4 | 
		 | 
		Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined | 
	 
  |   |  | 
	
		 T42.8X5 | 
		 | 
		Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants | 
	 
  |   |  | 
	
		 T42.8X6 | 
		 | 
		Underdosing of antiparkinsonism drugs and other central muscle-tone depressants | 
	 
  |    |    |