ICD-10-CM > S00-T88 > T36-T50 > T37 > T37.8 > T37.8X > T37.8X4 T37.8X4 Poisoning by other specified systemic anti-infectives and antiparasitics, undetermined Non-Billable/Non-Specific Codes T37.8X4A..., initial encounterT37.8X4D..., subsequent encounterT37.8X4S..., sequela