ICD-10-CM > S00-T88 > S90-S99 > S91 > S91.2 > S91.20 > S91.203 S91.203 Unspecified open wound of unspecified great toe with damage to nail Non-Billable/Non-Specific Codes S91.203A..., initial encounterS91.203D..., subsequent encounterS91.203S..., sequela