ICD-10-CM > S00-T88 > S80-S89 > S88 > S88.0 > S88.02 > S88.021 S88.021 Partial traumatic amputation at knee level, right lower leg Non-Billable/Non-Specific Codes S88.021A..., initial encounterS88.021D..., subsequent encounterS88.021S..., sequela