Bankruptcy law in the United States is federal law and is governed by the statutes contained in Title 11 of the United States Code.
Cases before the United States bankruptcy courts are governed by the Federal Rules of Bankruptcy Procedure (FRBP), rather than the Federal Rules of Civil Procedure. In adversary proceedings, a subset of the FRBP (Rules 7001--7087) apply. These roughly correspond to the Federal Rules of Civil Procedure. The FRBP also governs appeals before the Bankruptcy Appellate Panels.
Collier on Bankruptcy (16th ed.) by 
