ICD-10-CM > S00-T88 > T36-T50 > T37 > T37.9 > T37.91 T37.91 Poisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by, adverse effect of and underdosing of systemic anti-infective and antiparasitics NOS Codes T37.91XA..., initial encounterT37.91XD..., subsequent encounterT37.91XS..., sequela