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W53 Contact with rodent

ICD-10-CM category W53 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 24 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

W53.0 Contact with mouseW53.01 Bitten by mouseW53.09 Other contact with mouseW53.1 Contact with ratW53.11 Bitten by ratW53.19 Other contact with ratW53.2 Contact with squirrelW53.21 Bitten by squirrelW53.29 Other contact with squirrelW53.8 Contact with other rodentW53.81 Bitten by other rodentW53.89 Other contact with other rodent

Billable codes in W53

CodeDescription
W53.01XABitten by mouse, initial encounter
W53.01XDBitten by mouse, subsequent encounter
W53.01XSBitten by mouse, sequela
W53.09XAOther contact with mouse, initial encounter
W53.09XDOther contact with mouse, subsequent encounter
W53.09XSOther contact with mouse, sequela
W53.11XABitten by rat, initial encounter
W53.11XDBitten by rat, subsequent encounter
W53.11XSBitten by rat, sequela
W53.19XAOther contact with rat, initial encounter
W53.19XDOther contact with rat, subsequent encounter
W53.19XSOther contact with rat, sequela
W53.21XABitten by squirrel, initial encounter
W53.21XDBitten by squirrel, subsequent encounter
W53.21XSBitten by squirrel, sequela
W53.29XAOther contact with squirrel, initial encounter
W53.29XDOther contact with squirrel, subsequent encounter
W53.29XSOther contact with squirrel, sequela
W53.81XABitten by other rodent, initial encounter
W53.81XDBitten by other rodent, subsequent encounter
W53.81XSBitten by other rodent, sequela
W53.89XAOther contact with other rodent, initial encounter
W53.89XDOther contact with other rodent, subsequent encounter
W53.89XSOther contact with other rodent, sequela

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