ICD-10-CM > S00-T88 > T36-T50 > T38 > T38.6 > T38.6X > T38.6X6 T38.6X6 Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified Non-Billable/Non-Specific Codes T38.6X6A..., initial encounterT38.6X6D..., subsequent encounterT38.6X6S..., sequela