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