T37.96Underdosing of unspecified systemic anti-infectives and antiparasitics

T37.96 is the ICD-10-CM diagnosis code for underdosing of unspecified systemic anti-infectives and antiparasitics. It belongs to category T37 (poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics), 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 T37.9, choose T37.96 (Underdosing of unspecified systemic anti-infectives and antiparasitics) only when documentation doesn't support a more specific option: poisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional) (T37.91), poisoning by unspecified systemic anti-infective and antiparasitics, intentional self-harm (T37.92), poisoning by unspecified systemic anti-infective and antiparasitics, assault (T37.93), poisoning by unspecified systemic anti-infective and antiparasitics, undetermined (T37.94) and adverse effect of unspecified systemic anti-infective and antiparasitic (T37.95).

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.