Good cause for not making a health insurance coverage assignment order shall be limited to either of the following:

1. (a) The court finds that one of the conditions listed in subdivision (a) of Section 3765 or in Section 3770 exists.
2. (b) The court finds that the health insurance coverage assignment order would cause extraordinary hardship to the obligor. The court shall specify the nature of the extraordinary hardship and, whenever possible, a date by which the obligor shall obtain health insurance coverage or be subject to a health insurance coverage assignment.