| W53 | Contact with rodent | NON-BILLABLE CODE |
| W53.0 | Contact with mouse | NON-BILLABLE CODE |
| W53.01 | Bitten by mouse | NON-BILLABLE CODE |
| W53.01XA | Bitten by mouse, initial encounter | BILLABLE CODE |
| W53.01XD | Bitten by mouse, subsequent encounter | BILLABLE CODE |
| W53.01XS | Bitten by mouse, sequela | BILLABLE CODE |
| W53.09 | Other contact with mouse | NON-BILLABLE CODE |
| W53.09XA | Other contact with mouse, initial encounter | BILLABLE CODE |
| W53.09XD | Other contact with mouse, subsequent encounter | BILLABLE CODE |
| W53.09XS | Other contact with mouse, sequela | BILLABLE CODE |
| W53.1 | Contact with rat | NON-BILLABLE CODE |
| W53.11 | Bitten by rat | NON-BILLABLE CODE |
| W53.11XA | Bitten by rat, initial encounter | BILLABLE CODE |
| W53.11XD | Bitten by rat, subsequent encounter | BILLABLE CODE |
| W53.11XS | Bitten by rat, sequela | BILLABLE CODE |
| W53.19 | Other contact with rat | NON-BILLABLE CODE |
| W53.19XA | Other contact with rat, initial encounter | BILLABLE CODE |
| W53.19XS | Other contact with rat, sequela | BILLABLE CODE |
| W53.2 | Contact with squirrel | NON-BILLABLE CODE |
| W53.21 | Bitten by squirrel | NON-BILLABLE CODE |
| W53.21XA | Bitten by squirrel, initial encounter | BILLABLE CODE |
| W53.21XD | Bitten by squirrel, subsequent encounter | BILLABLE CODE |
| W53.21XS | Bitten by squirrel, sequela | BILLABLE CODE |
| W53.29 | Other contact with squirrel | NON-BILLABLE CODE |
| W53.29XA | Other contact with squirrel, initial encounter | BILLABLE CODE |
| W53.29XD | Other contact with squirrel, subsequent encounter | BILLABLE CODE |
| W53.29XS | Other contact with squirrel, sequela | BILLABLE CODE |
| W53.8 | Contact with other rodent | NON-BILLABLE CODE |
| W53.81 | Bitten by other rodent | NON-BILLABLE CODE |
| W53.81XA | Bitten by other rodent, initial encounter | BILLABLE CODE |
| W53.81XD | Bitten by other rodent, subsequent encounter | BILLABLE CODE |
| W53.81XS | Bitten by other rodent, sequela | BILLABLE CODE |
| W53.89 | Other contact with other rodent | NON-BILLABLE CODE |
| W53.89XA | Other contact with other rodent, initial encounter | BILLABLE CODE |
| W53.89XD | Other contact with other rodent, subsequent encounter | BILLABLE CODE |
| W53.89XS | Other contact with other rodent, sequela | BILLABLE CODE |
