ICD-10-CM > V00-Y99 > W20-W49 > W20 > W20.0 W20.0 Struck by falling object in cave-in Non-Billable/Non-Specific Type 2 Excludes asphyxiation due to cave-in (T71.21) Codes W20.0XXA..., initial encounterW20.0XXD..., subsequent encounterW20.0XXS..., sequela