| W55.31 | Bitten by other hoof stock | NON-BILLABLE CODE |
| W55.31XA | Bitten by other hoof stock, initial encounter | BILLABLE CODE |
| W55.31XD | Bitten by other hoof stock, subsequent encounter | BILLABLE CODE |
| W55.31XS | Bitten by other hoof stock, sequela | BILLABLE CODE |
| W55.32 | Struck by other hoof stock | NON-BILLABLE CODE |
| W55.32XA | Struck by other hoof stock, initial encounter | BILLABLE CODE |
| W55.32XD | Struck by other hoof stock, subsequent encounter | BILLABLE CODE |
| W55.32XS | Struck by other hoof stock, sequela | BILLABLE CODE |
| W55.39 | Other contact with other hoof stock | NON-BILLABLE CODE |
| W55.39XA | Other contact with other hoof stock, initial encounter | BILLABLE CODE |
| W55.39XD | Other contact with other hoof stock, subsequent encounter | BILLABLE CODE |
| W55.39XS | Other contact with other hoof stock, sequela | BILLABLE CODE |
