ICD-10-CM > S00-T88 > S80-S89 > S88 > S88.1 > S88.12 > S88.129 S88.129 Partial traumatic amputation at level between knee and ankle, unspecified lower leg Non-Billable/Non-Specific Codes S88.129A..., initial encounterS88.129D..., subsequent encounterS88.129S..., sequela