ICD-10-CM > S00-T88 > S90-S99 > S93 > S93.4 > S93.49 > S93.499 S93.499 Sprain of other ligament of unspecified ankle Non-Billable/Non-Specific Codes S93.499A..., initial encounterS93.499D..., subsequent encounterS93.499S..., sequela