In simple words: This code is used when someone has had contact with a mouse that wasn't a bite, and it caused an injury or problem. For example, if someone touched a mouse and got sick or injured from it.

This code classifies other types of contact with a mouse, excluding bites.It encompasses situations where contact with a mouse results in injury or other adverse effects, such as exposure to saliva, feces, or urine.

Example 1: A patient presents to the emergency room after handling a mouse in their home. They developed a localized skin infection at the site of contact.The physician diagnoses cellulitis and documents contact with a mouse., A child is playing in a barn and comes into contact with mouse droppings. The child subsequently develops symptoms consistent with hantavirus pulmonary syndrome. This contact is documented and coded., During a routine home visit, a home health nurse observes the patient's skin has a lesion consistent with a rodent bite. However, the patient does not recall being bitten but reports coming into close contact with mice. The nurse records the encounter.

Thorough documentation is required including a detailed description of the contact event, the location of the contact, the date and time of the incident, the nature of the contact (e.g., touching, handling), the type of mouse involved, any resulting injuries or illnesses, and all treatments provided.

** This code should be used in conjunction with codes from other chapters that accurately reflect the nature of the injury or illness resulting from the contact with the mouse.For example, a code indicating the specific infection or injury may be used as the primary code, with W53.09 as a secondary code.Consider using appropriate 7th character codes for sequencing encounters.