Load content field default image in Drupal 7

Code to get and display the Content(CCK) field information and display default image

$field_name = 'field_name';
$field = field_read_instances(array('field_name' => $field_name));
$field_fid = $field[0]['settings']['default_image'];
$image = file_load($field_fid);
$path = file_create_url($image->uri);