ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.Z > T50.Z9 > T50.Z96 T50.Z96 Underdosing of other vaccines and biological substances Non-Billable/Non-Specific Codes T50.Z96A..., initial encounterT50.Z96D..., subsequent encounterT50.Z96S..., sequela