ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.0 > T50.0X > T50.0X6 T50.0X6 Underdosing of mineralocorticoids and their antagonists Non-Billable/Non-Specific Codes T50.0X6A..., initial encounterT50.0X6D..., subsequent encounterT50.0X6S..., sequela