ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.0 > S86.09 S86.09 Other specified injury of Achilles tendon Non-Billable/Non-Specific Codes S86.091Other specified injury of right Achilles tendonS86.091A..., initial encounterS86.091D..., subsequent encounterS86.091S..., sequelaS86.092Other specified injury of left Achilles tendonS86.092A..., initial encounterS86.092D..., subsequent encounterS86.092S..., sequelaS86.099Other specified injury of unspecified Achilles tendonS86.099A..., initial encounterS86.099D..., subsequent encounterS86.099S..., sequela