ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.4 > S83.42 > S83.422 S83.422 Sprain of lateral collateral ligament of left knee Non-Billable/Non-Specific Codes S83.422A..., initial encounterS83.422D..., subsequent encounterS83.422S..., sequela