2025 ICD-10-CM code W53.01

Bitten by a mouse.

This code should be used as a secondary code to a code from another chapter indicating the nature of the condition (e.g., S00-T88 for injuries, W50-W64 for other external causes).

Medical necessity is established by the presence of a bite wound caused by a mouse. Treatment is necessary to prevent infection and other complications.

The provider's responsibility is to document the location and severity of the bite,assess for infection risk, administer appropriate first aid and treatment (e.g., tetanus prophylaxis, antibiotics, wound care), and provide patient education about preventing future incidents.

In simple words: The patient was bitten by a mouse.

Contact with a mouse resulting in a bite injury.This includes contact with the saliva, feces, or urine of the mouse.

Example 1: A child playing in a park is bitten on the finger by a mouse. The bite breaks the skin and bleeds slightly., A homeowner discovers mouse droppings in their pantry. While cleaning, a mouse bites them on the hand., A camper sleeping in a tent is bitten on the toe by a mouse.

Location of the biteSeverity of the bite (e.g., superficial, deep, puncture wound)Presence of any associated injuries (e.g., lacerations, fractures)Signs and symptoms of infectionTreatment provided (e.g., wound cleaning, antibiotics, tetanus prophylaxis)Patient education provided

** Excludes1: Toxic effect of contact with venomous animals and plants (T63.-)

** Only Enterprise users with EHR integration can access case-specific answers. Click here to request access.