Current
T42 — Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
Part of Chapter 19: Injury, poisoning and certain other consequences of external causes , block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) .
Official Notes
Excludes2
drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.--F19.-)
7th Character
The appropriate 7th character is to be added to each code from category T42
7th Character
A - initial encounter
7th Character
D - subsequent encounter
7th Character
S - sequela
Child Codes
- T42.0 Poisoning by, adverse effect of and underdosing of hydantoin derivatives Has subcodes
- T42.1 Poisoning by, adverse effect of and underdosing of iminostilbenes Has subcodes
- T42.2 Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones Has subcodes
- T42.3 Poisoning by, adverse effect of and underdosing of barbiturates Has subcodes
- T42.4 Poisoning by, adverse effect of and underdosing of benzodiazepines Has subcodes
- T42.5 Poisoning by, adverse effect of and underdosing of mixed antiepileptics Has subcodes
- T42.6 Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs Has subcodes
- T42.7 Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugs Has subcodes
- T42.8 Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants Has subcodes
Referenced By
Official notes on these codes cite T42.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS