ICD-10-CM > S00-T88 > T36-T50 > T38 > T38.8 > T38.89 > T38.896 T38.896 Underdosing of other hormones and synthetic substitutes Non-Billable/Non-Specific Codes T38.896A..., initial encounterT38.896D..., subsequent encounterT38.896S..., sequela