Adding values to rows in CSV

• Indent the blocks properly.
• Define the immutable exclusion lists before the loop.
• To enhance readability, maintainability, and to avoid missing typos such as the dot after DODSCAN, which should be a comma, write just one array element per line without commas.

$excludedAccounts = @{
    unique = @(
        'ACCOUNTS - DODSCAN'
        'ACCOUNTS - Domain Admins'
        'ACCOUNTS - LADM_WS_Admins'
        'ACCOUNTS - Tech Enterprise'
    )
    account0 = @(
        'esrxadm1n_esi'
        '#Update'
        'medco_tech'
        'medco_admin'
    )
}

foreach ($row in $csv) {
    if ($row.Type0 -eq 'Domain') { 
        $newName = "$($row.Domain0) - $($row.Account0)" 
        $isRowExcluded = $newName -in $excludedAccounts.unique
    } else {
        $newName = "$($row.Netbios_name0) - $($row.Account0)"
        $isRowExcluded = $row.'Account0' -in $excludedAccounts.account0
    }
    $row.'Unique Account Name' = $newName
    $row.'Excluded' = [string]$isRowExcluded
}