W21.12S✓ Billable
Struck by tennis racquet, sequela
Code Hierarchy
┌20External causes of morbidity (V00-Y99)├W20-W49Exposure to inanimate mechanical forces (W20-W49)├W21Striking against or struck by sports equipment
└W21.12SStruck by tennis racquet, sequela
Not sure between two codes?
⇄ Compare W21.12S with another code →