ICD-10-CM > S00-T88 > S90-S99 > S99 > S99.8 > S99.81 S99.81 Other specified injuries of ankle Non-Billable/Non-Specific Codes S99.811Other specified injuries of right ankleS99.811A..., initial encounterS99.811D..., subsequent encounterS99.811S..., sequelaS99.812Other specified injuries of left ankleS99.812A..., initial encounterS99.812D..., subsequent encounterS99.812S..., sequelaS99.819Other specified injuries of unspecified ankleS99.819A..., initial encounterS99.819D..., subsequent encounterS99.819S..., sequela