ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.1 > T46.1X > T46.1X1 T46.1X1 Poisoning by calcium-channel blockers, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by calcium-channel blockers NOS Codes T46.1X1A..., initial encounterT46.1X1D..., subsequent encounterT46.1X1S..., sequela