W53.2 Contact with squirrelNon-billable header with 2 child codes.
W55 Contact with other mammals ("bitten or struck by rodent (W53.-)")W53.11XS Bitten by rat, sequelaW53.19 Other contact with ratW53.19XA Other contact with rat, initial encounterW53.19XD Other contact with rat, subsequent encounterW53.19XS Other contact with rat, sequelaW53.2 Contact with squirrel (this code)W53.21 Bitten by squirrelW53.21XA Bitten by squirrel, initial encounterW53.21XD Bitten by squirrel, subsequent encounterW53.21XS Bitten by squirrel, sequelaW53.29 Other contact with squirrel