The Code of Federal Regulations (CFR) is the codification of the general and permanent rules and regulations (sometimes called administrative law

United States administrative law

United States administrative law encompasses a number of statutes and cases which define the extent of the powers and responsibilities held by administrative agencies of the United States Government. The executive, legislative, and judicial branches of the U.S. federal government cannot always...

) published in the Federal Register

Federal Register

The Federal Register , abbreviated FR, or sometimes Fed. Reg.) is the official journal of the federal government of the United States that contains most routine publications and public notices of government agencies...

by the executive departments and agencies of the Federal Government of the United States

Federal government of the United States

The federal government of the United States is the national government of the constitutional republic of fifty states that is the United States of America. The federal government comprises three distinct branches of government: a legislative, an executive and a judiciary. These branches and...

.

The CFR is published by the Office of the Federal Register

Office of the Federal Register

The Office of the Federal Register is an agency of the United States government within the National Archives and Records Administration.The Office publishes the Federal Register, Code of Federal Regulations, and United States Statutes at Large, among others. It also administers the Electoral College....

, an agency of the National Archives and Records Administration

National Archives and Records Administration

The National Archives and Records Administration is an independent agency of the United States government charged with preserving and documenting government and historical records and with increasing public access to those documents, which comprise the National Archives...

 (NARA).

The CFR is divided into 50 titles that represent broad areas subject to Federal regulation.
Every regulation in the CFR must have an "enabling statute," or statutory authority

Statutory authority

A statutory authority is a body set up by law which is authorised to enforce legislation on behalf of the relevant country or state. They are typically found in countries which are governed by a British style of parliamentary democracy. They are common in the UK, Australia, New Zealand etc but...

.