ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.0 > S86.00 S86.00 Unspecified injury of Achilles tendon Non-Billable/Non-Specific Codes S86.001Unspecified injury of right Achilles tendonS86.001A..., initial encounterS86.001D..., subsequent encounterS86.001S..., sequelaS86.002Unspecified injury of left Achilles tendonS86.002A..., initial encounterS86.002D..., subsequent encounterS86.002S..., sequelaS86.009Unspecified injury of unspecified Achilles tendonS86.009A..., initial encounterS86.009D..., subsequent encounterS86.009S..., sequela