ICD-10-CM > S00-T88 > S90-S99 > S93 > S93.4 > S93.41 > S93.412 S93.412 Sprain of calcaneofibular ligament of left ankle Non-Billable/Non-Specific Codes S93.412A..., initial encounterS93.412D..., subsequent encounterS93.412S..., sequela