ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.2 > T46.2X > T46.2X5 T46.2X5 Adverse effect of other antidysrhythmic drugs Non-Billable/Non-Specific Codes T46.2X5A..., initial encounterT46.2X5D..., subsequent encounterT46.2X5S..., sequela