| S13.130 | Subluxation of C2/C3 cervical vertebrae | NON-BILLABLE CODE |
| S13.130A | Subluxation of C2/C3 cervical vertebrae, initial encounter | BILLABLE CODE |
| S13.130D | Subluxation of C2/C3 cervical vertebrae, subsequent encounter | BILLABLE CODE |
| S13.130S | Subluxation of C2/C3 cervical vertebrae, sequela | BILLABLE CODE |
| S13.131 | Dislocation of C2/C3 cervical vertebrae | NON-BILLABLE CODE |
| S13.131A | Dislocation of C2/C3 cervical vertebrae, initial encounter | BILLABLE CODE |
| S13.131D | Dislocation of C2/C3 cervical vertebrae, subsequent encounter | BILLABLE CODE |
| S13.131S | Dislocation of C2/C3 cervical vertebrae, sequela | BILLABLE CODE |
