ICD-10-CM > S00-T88 > S50-S59 > S53 > S53.4 > S53.43 S53.43 Radial collateral ligament sprain Non-Billable/Non-Specific Codes S53.431Radial collateral ligament sprain of right elbowS53.431A..., initial encounterS53.431D..., subsequent encounterS53.431S..., sequelaS53.432Radial collateral ligament sprain of left elbowS53.432A..., initial encounterS53.432D..., subsequent encounterS53.432S..., sequelaS53.439Radial collateral ligament sprain of unspecified elbowS53.439A..., initial encounterS53.439D..., subsequent encounterS53.439S..., sequela