T42.73Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault

T42.73 is the ICD-10-CM diagnosis code for poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault. It belongs to category T42 (poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T42.7, choose T42.73 (Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault) only when documentation doesn't support a more specific option: poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional) (T42.71), poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm (T42.72), poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined (T42.74), adverse effect of unspecified antiepileptic and sedative-hypnotic drugs (T42.75) and underdosing of unspecified antiepileptic and sedative-hypnotic drugs (T42.76).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.