ICD-10-CM > S00-T88 > S90-S99 > S93 > S93.4 > S93.40 > S93.401 S93.401 Sprain of unspecified ligament of right ankle Non-Billable/Non-Specific Codes S93.401A..., initial encounterS93.401D..., subsequent encounterS93.401S..., sequela