ICD-10-CM > S00-T88 > S80-S89 > S88 > S88.1 > S88.12 > S88.121 S88.121 Partial traumatic amputation at level between knee and ankle, right lower leg Non-Billable/Non-Specific Codes S88.121A..., initial encounterS88.121D..., subsequent encounterS88.121S..., sequela