ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.0 > T46.0X > T46.0X6 T46.0X6 Underdosing of cardiac-stimulant glycosides and drugs of similar action Non-Billable/Non-Specific Codes T46.0X6A..., initial encounterT46.0X6D..., subsequent encounterT46.0X6S..., sequela