W53: Contact with rodent

Codes under W53 (Contact with rodent). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
W53.0	Contact with mouse	—
W53.01	Bitten by mouse	—
W53.1	Contact with rat	—
W53.01XA	Bitten by mouse, initial encounter	✓
W53.01XD	Bitten by mouse, subsequent encounter	✓
W53.01XS	Bitten by mouse, sequela	✓
W53.2	Contact with squirrel	—
W53.8	Contact with other rodent	—
W53.09	Other contact with mouse	—
W53.09XA	Other contact with mouse, initial encounter	✓
W53.09XD	Other contact with mouse, subsequent encounter	✓
W53.09XS	Other contact with mouse, sequela	✓
W53.11	Bitten by rat	—
W53.11XA	Bitten by rat, initial encounter	✓
W53.11XD	Bitten by rat, subsequent encounter	✓
W53.11XS	Bitten by rat, sequela	✓
W53.19	Other contact with rat	—
W53.19XA	Other contact with rat, initial encounter	✓
W53.19XD	Other contact with rat, subsequent encounter	✓
W53.19XS	Other contact with rat, sequela	✓
W53.21	Bitten by squirrel	—
W53.21XA	Bitten by squirrel, initial encounter	✓
W53.21XD	Bitten by squirrel, subsequent encounter	✓
W53.21XS	Bitten by squirrel, sequela	✓
W53.29	Other contact with squirrel	—
W53.29XA	Other contact with squirrel, initial encounter	✓
W53.29XD	Other contact with squirrel, subsequent encounter	✓
W53.29XS	Other contact with squirrel, sequela	✓
W53.81	Bitten by other rodent	—
W53.81XA	Bitten by other rodent, initial encounter	✓
W53.81XD	Bitten by other rodent, subsequent encounter	✓
W53.81XS	Bitten by other rodent, sequela	✓
W53.89	Other contact with other rodent	—
W53.89XA	Other contact with other rodent, initial encounter	✓
W53.89XD	Other contact with other rodent, subsequent encounter	✓
W53.89XS	Other contact with other rodent, sequela	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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