S23.42 - Sprain of sternum S23.4 - Sprain of ribs and sternum S23.42 - Sprain of sternum S23.420 - Sprain of sternoclavicular (joint) (ligament) S23.421 - Sprain of chondrosternal joint S23.428 - Other sprain of sternum S23.429 - Unspecified sprain of sternum