T43.606Underdosing of unspecified psychostimulants

T43.606 is the ICD-10-CM diagnosis code for underdosing of unspecified psychostimulants. It belongs to category T43 (poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified), 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 T43.60, choose T43.606 (Underdosing of unspecified psychostimulants) only when documentation doesn't support a more specific option: poisoning by unspecified psychostimulants, accidental (unintentional) (T43.601), poisoning by unspecified psychostimulants, intentional self-harm (T43.602), poisoning by unspecified psychostimulants, assault (T43.603), poisoning by unspecified psychostimulants, undetermined (T43.604) and adverse effect of unspecified psychostimulants (T43.605).

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.