ICD-10-CM > S00-T88 > S90-S99 > S96 > S96.2 > S96.21 S96.21 Strain of intrinsic muscle and tendon at ankle and foot level Non-Billable/Non-Specific Codes S96.211Strain of intrinsic muscle and tendon at ankle and foot level, right footS96.211A..., initial encounterS96.211D..., subsequent encounterS96.211S..., sequelaS96.212Strain of intrinsic muscle and tendon at ankle and foot level, left footS96.212A..., initial encounterS96.212D..., subsequent encounterS96.212S..., sequelaS96.219Strain of intrinsic muscle and tendon at ankle and foot level, unspecified footS96.219A..., initial encounterS96.219D..., subsequent encounterS96.219S..., sequela