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  5. Contact with rodent (W53)

Contact with rodent (W53)

The ICD-10 code section W53 addresses various types of contact with rodents, including bites and other interactions with mice, rats, squirrels, and other rodents. These codes help document and classify injuries and encounters related to rodents precisely.

This section covers specific codes like W53.01XA for a bite of mouse (also known as "bite of domestic pet") during an initial medical encounter, and W53.11XA, which identifies a rat bite or "bite of rodent" in an initial visit. The codes further distinguish whether the patient is in an initial encounter, a subsequent encounter, or experiencing sequelae (long-term consequences) of the injury. In addition to bites, there are codes for other types of contact with rodents, such as W53.09XA for other contact with a mouse, which might include scratches or handling. The inclusion of synonyms like "rat bite wound," "squirrel bite wound," and "hamster bite wound" clarifies common terms that correspond to these official ICD-10 codes, aiding healthcare providers and coders in selecting the accurate code for injuries caused by rodents. These detailed distinctions ensure correct coding for wound types and incident timing related to rodent contact.

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • contact with saliva, feces or urine of rodent

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

  • The appropriate 7th character is to be added to each code from category W53

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela