ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.9 > T46.99 > T46.994 T46.994 Poisoning by other agents primarily affecting the cardiovascular system, undetermined Non-Billable/Non-Specific Codes T46.994A..., initial encounterT46.994D..., subsequent encounterT46.994S..., sequela