Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
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.-)

sevenChrNote
The appropriate 7th character is to be added to each code from category T42

sevenChrDef
A: initial encounter
D: subsequent encounter
S: sequela
T42.0: Poisoning by, adverse effect of and underdosing of hydantoin derivatives
T42.1: Poisoning by, adverse effect of and underdosing of iminostilbenes
T42.2: Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones
T42.3: Poisoning by, adverse effect of and underdosing of barbiturates
T42.4: Poisoning by, adverse effect of and underdosing of benzodiazepines
T42.5: Poisoning by, adverse effect of and underdosing of mixed antiepileptics
T42.6: Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs
T42.7: Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugs
T42.8: Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants

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