ICD-10-CM > S00-T88 > S90-S99 > S96 > S96.9 > S96.99 S96.99 Other specified injury of unspecified muscle and tendon at ankle and foot level Non-Billable/Non-Specific Codes S96.991Other specified injury of unspecified muscle and tendon at ankle and foot level, right footS96.991A..., initial encounterS96.991D..., subsequent encounterS96.991S..., sequelaS96.992Other specified injury of unspecified muscle and tendon at ankle and foot level, left footS96.992A..., initial encounterS96.992D..., subsequent encounterS96.992S..., sequelaS96.999Other specified injury of unspecified muscle and tendon at ankle and foot level, unspecified footS96.999A..., initial encounterS96.999D..., subsequent encounterS96.999S..., sequela