ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.9 > T46.90 > T46.904 T46.904 Poisoning by unspecified agents primarily affecting the cardiovascular system, undetermined Non-Billable/Non-Specific Codes T46.904A..., initial encounterT46.904D..., subsequent encounterT46.904S..., sequela