| S23.420 | Sprain of sternoclavicular (joint) (ligament) | NON-BILLABLE CODE |
| S23.420A | Sprain of sternoclavicular (joint) (ligament), initial encounter | BILLABLE CODE |
| S23.420D | Sprain of sternoclavicular (joint) (ligament), subsequent encounter | BILLABLE CODE |
| S23.420S | Sprain of sternoclavicular (joint) (ligament), sequela | BILLABLE CODE |
| S23.421 | Sprain of chondrosternal joint | NON-BILLABLE CODE |
| S23.421A | Sprain of chondrosternal joint, initial encounter | BILLABLE CODE |
| S23.421D | Sprain of chondrosternal joint, subsequent encounter | BILLABLE CODE |
| S23.421S | Sprain of chondrosternal joint, sequela | BILLABLE CODE |
| S23.428 | Other sprain of sternum | NON-BILLABLE CODE |
| S23.428A | Other sprain of sternum, initial encounter | BILLABLE CODE |
| S23.428D | Other sprain of sternum, subsequent encounter | BILLABLE CODE |
| S23.428S | Other sprain of sternum, sequela | BILLABLE CODE |
| S23.429 | Unspecified sprain of sternum | NON-BILLABLE CODE |
| S23.429A | Unspecified sprain of sternum, initial encounter | BILLABLE CODE |
| S23.429D | Unspecified sprain of sternum, subsequent encounter | BILLABLE CODE |
| S23.429S | Unspecified sprain of sternum, sequela | BILLABLE CODE |
