ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.5 > T50.5X > T50.5X6 T50.5X6 Underdosing of appetite depressants Non-Billable/Non-Specific Codes T50.5X6A..., initial encounterT50.5X6D..., subsequent encounterT50.5X6S..., sequela