ICD-10-CM > S00-T88 > S90-S99 > S96 > S96.8 > S96.81 S96.81 Strain of other specified muscles and tendons at ankle and foot level Non-Billable/Non-Specific Codes S96.811Strain of other specified muscles and tendons at ankle and foot level, right footS96.811A..., initial encounterS96.811D..., subsequent encounterS96.811S..., sequelaS96.812Strain of other specified muscles and tendons at ankle and foot level, left footS96.812A..., initial encounterS96.812D..., subsequent encounterS96.812S..., sequelaS96.819Strain of other specified muscles and tendons at ankle and foot level, unspecified footS96.819A..., initial encounterS96.819D..., subsequent encounterS96.819S..., sequela