T40.492Poisoning by other synthetic narcotics, intentional self-harm

T40.492 is the ICD-10-CM diagnosis code for poisoning by other synthetic narcotics, intentional self-harm. It belongs to category T40 (poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]), 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 T40.49, choose T40.492 (Poisoning by other synthetic narcotics, intentional self-harm) only when documentation doesn't support a more specific option: poisoning by other synthetic narcotics, accidental (unintentional) (T40.491), poisoning by other synthetic narcotics, assault (T40.493), poisoning by other synthetic narcotics, undetermined (T40.494), adverse effect of other synthetic narcotics (T40.495) and underdosing of other synthetic narcotics (T40.496).

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 was added in FY2021, effective October 1, 2020.