ICD-10-CM > S00-T88 > S90-S99 > S96 > S96.9 > S96.91 > S96.911 S96.911 Strain of unspecified muscle and tendon at ankle and foot level, right foot Non-Billable/Non-Specific Codes S96.911A..., initial encounterS96.911D..., subsequent encounterS96.911S..., sequela