| S91.001 | Unspecified open wound, right ankle | NON-BILLABLE CODE |
| S91.001A | Unspecified open wound, right ankle, initial encounter | BILLABLE CODE |
| S91.001D | Unspecified open wound, right ankle, subsequent encounter | BILLABLE CODE |
| S91.001S | Unspecified open wound, right ankle, sequela | BILLABLE CODE |
| S91.002 | Unspecified open wound, left ankle | NON-BILLABLE CODE |
| S91.002A | Unspecified open wound, left ankle, initial encounter | BILLABLE CODE |
| S91.002D | Unspecified open wound, left ankle, subsequent encounter | BILLABLE CODE |
| S91.002S | Unspecified open wound, left ankle, sequela | BILLABLE CODE |
| S91.009 | Unspecified open wound, unspecified ankle | NON-BILLABLE CODE |
| S91.009A | Unspecified open wound, unspecified ankle, initial encounter | BILLABLE CODE |
| S91.009D | Unspecified open wound, unspecified ankle, subsequent encounter | BILLABLE CODE |
| S91.009S | Unspecified open wound, unspecified ankle, sequela | BILLABLE CODE |
