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T42 - Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs


The ICD 10 Code for Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs is listed as T42.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: T42
Description: 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.-)
  • The appropriate 7th character is to be added to each code from category T42
  • A - initial encounter
  • D - subsequent encounter
  • S - sequela
Chapter Injury, poisoning and certain other consequences of external causes (S00-T88)
ICD-10-CM Children (deeper level / typically more specific) of T42:
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