ICD-10-CM > S00-T88 > T36-T50 > T46 > T46.8 > T46.8X > T46.8X6 T46.8X6 Underdosing of antivaricose drugs, including sclerosing agents Non-Billable/Non-Specific Codes T46.8X6A..., initial encounterT46.8X6D..., subsequent encounterT46.8X6S..., sequela