ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.1 > T46.1X > T46.1X2 T46.1X2 Poisoning by calcium-channel blockers, intentional self-harm Non-Billable/Non-Specific Codes T46.1X2A..., initial encounterT46.1X2D..., subsequent encounterT46.1X2S..., sequela