ICD-10-CM > V00-Y99 > W20-W49 > W20 > W20.1 W20.1 Struck by object due to collapse of building Non-Billable/Non-Specific Type 1 Excludes struck by object due to collapse of burning building (X00.2, X02.2) Codes W20.1XXA..., initial encounterW20.1XXD..., subsequent encounterW20.1XXS..., sequela