ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.4 > S83.41 > S83.411 S83.411 Sprain of medial collateral ligament of right knee Non-Billable/Non-Specific Codes S83.411A..., initial encounterS83.411D..., subsequent encounterS83.411S..., sequela