T40.726Underdosing of synthetic cannabinoids

T40.726 is the ICD-10-CM diagnosis code for underdosing of synthetic cannabinoids. 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 T40.72 (poisoning by, adverse effect of and underdosing of synthetic cannabinoids), T40.726 is specifically for underdosing of synthetic cannabinoids. Related codes cover poisoning by synthetic cannabinoids, accidental (unintentional) (T40.721), poisoning by synthetic cannabinoids, intentional self-harm (T40.722), poisoning by synthetic cannabinoids, assault (T40.723), poisoning by synthetic cannabinoids, undetermined (T40.724) and adverse effect of synthetic cannabinoids (T40.725).

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 FY2022, effective October 1, 2021.