11 USC Appendix Rule 5010 - Reopening Cases

A case may be reopened on motion of the debtor or other party in interest pursuant to 350(b) of the Code. In a chapter 7, 12, or 13 case a trustee shall not be appointed by the United States trustee unless the court determines that a trustee is not necessary to protect the interests of creditors and the debtor or to insure efficient administration of the case.