| S63.641 | Sprain of metacarpophalangeal joint of right thumb | NON-BILLABLE CODE |
| S63.641A | Sprain of metacarpophalangeal joint of right thumb, initial encounter | BILLABLE CODE |
| S63.641D | Sprain of metacarpophalangeal joint of right thumb, subsequent encounter | BILLABLE CODE |
| S63.641S | Sprain of metacarpophalangeal joint of right thumb, sequela | BILLABLE CODE |
| S63.642 | Sprain of metacarpophalangeal joint of left thumb | NON-BILLABLE CODE |
| S63.642A | Sprain of metacarpophalangeal joint of left thumb, initial encounter | BILLABLE CODE |
| S63.642D | Sprain of metacarpophalangeal joint of left thumb, subsequent encounter | BILLABLE CODE |
| S63.642S | Sprain of metacarpophalangeal joint of left thumb, sequela | BILLABLE CODE |
| S63.649 | Sprain of metacarpophalangeal joint of unspecified thumb | NON-BILLABLE CODE |
| S63.649A | Sprain of metacarpophalangeal joint of unspecified thumb, initial encounter | BILLABLE CODE |
| S63.649D | Sprain of metacarpophalangeal joint of unspecified thumb, subsequent encounter | BILLABLE CODE |
| S63.649S | Sprain of metacarpophalangeal joint of unspecified thumb, sequela | BILLABLE CODE |
