ICD-10-CM > S00-T88 > S50-S59 > S53 > S53.2 S53.2 Traumatic rupture of radial collateral ligament Non-Billable/Non-Specific Type 1 Excludes sprain of radial collateral ligament NOS (S53.43-) Codes S53.20Traumatic rupture of unspecified radial collateral ligamentS53.20XA..., initial encounterS53.20XD..., subsequent encounterS53.20XS..., sequelaS53.21Traumatic rupture of right radial collateral ligamentS53.21XA..., initial encounterS53.21XD..., subsequent encounterS53.21XS..., sequelaS53.22Traumatic rupture of left radial collateral ligamentS53.22XA..., initial encounterS53.22XD..., subsequent encounterS53.22XS..., sequela