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