T40.421Poisoning by tramadol, accidental (unintentional)

T40.421 is the ICD-10-CM diagnosis code for poisoning by tramadol, accidental (unintentional). 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 T40.42 (poisoning by, adverse effect of and underdosing of tramadol), T40.421 is specifically for poisoning by tramadol, accidental (unintentional). Related codes cover poisoning by tramadol, intentional self-harm (T40.422), poisoning by tramadol, assault (T40.423), poisoning by tramadol, undetermined (T40.424), adverse effect of tramadol (T40.425) and underdosing of tramadol (T40.426).

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.