ICD-10-CM > S00-T88 > S90-S99 > S96 > S96.9 > S96.91 > S96.919 S96.919 Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot Non-Billable/Non-Specific Codes S96.919A..., initial encounterS96.919D..., subsequent encounterS96.919S..., sequela