ICD-10-CM > V00-Y99 > W50-W64 > W51 W51 Accidental striking against or bumped into by another person Non-Billable/Non-Specific Type 1 Excludes assault by striking against or bumping into by another person (Y04.2)fall due to collision with another person (W03) Codes W51XXXA..., initial encounterW51XXXD..., subsequent encounterW51XXXS..., sequela