ICD-10-CM > V00-Y99 > W20-W49 > W21 > W21.8 W21.8 Striking against or struck by other sports equipment Non-Billable/Non-Specific Codes W21.81Striking against or struck by football helmetW21.81XA..., initial encounterW21.81XD..., subsequent encounterW21.81XS..., sequelaW21.89Striking against or struck by other sports equipmentW21.89XA..., initial encounterW21.89XD..., subsequent encounterW21.89XS..., sequela