ICD-10-CM > S00-T88 > T36-T50 > T42 > T42.2 > T42.2X > T42.2X6 T42.2X6 Underdosing of succinimides and oxazolidinediones Non-Billable/Non-Specific Codes T42.2X6A..., initial encounterT42.2X6D..., subsequent encounterT42.2X6S..., sequela