ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.3 > T50.3X > T50.3X6 T50.3X6 Underdosing of electrolytic, caloric and water-balance agents Non-Billable/Non-Specific Codes T50.3X6A..., initial encounterT50.3X6D..., subsequent encounterT50.3X6S..., sequela