ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.4 > T46.4X > T46.4X1 T46.4X1 Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by angiotensin-converting-enzyme inhibitors NOS Codes T46.4X1A..., initial encounterT46.4X1D..., subsequent encounterT46.4X1S..., sequela