ICD-10-CM > S00-T88 > S80-S89 > S86 > S86.0 > S86.01 > S86.019 S86.019 Strain of unspecified Achilles tendon Non-Billable/Non-Specific Codes S86.019A..., initial encounterS86.019D..., subsequent encounterS86.019S..., sequela