This all stems from the DEA announcement of a new code for Cannabis Extracts. Cannabis extracts are just that extracts from the Cannabis plant. In the initial filing in 2011 the DEA stated:
The United Nations Conventions on international drug control treat extracts from the cannabis plant differently than marihuana or tetrahydrocannabinols. The creation of a new drug code in DEA regulations for marihuana extracts will allow for more appropriate accounting of such materials consistent with treaty provisions.
In the announcement DEA clarified a question brought up in a comment:
One comment requested clarification of whether the new drug code will be applicable to cannabidiol (CBD), if it is not combined with cannabinols.
DEA response: For practical purposes, all extracts that contain CBD will also contain at least small amounts of other cannabinoids. However, if it were possible to produce from the cannabis plant an extract that contained only CBD and no other cannabinoids, such an extract would fall within the new drug code 7350. In view of this comment, the regulatory text accompanying new drug code 7350 has been modified slightly to make clear that it includes cannabis extracts that contain only one cannabinoid.
They again reiterate this in their final action:
“Meaning an extract containing one or more cannabinoids that has been derived from any plant of the genus Cannabis, other than the separated resin (whether crude or purified) obtained from the plant.”
The same would be true for THC extracted from the plant. As an Extract it is a schedule I substance. However THC produced in a Lab remains in it’s current schedule. The difference is one is extracted from the plant the other is produced by a combination of chemicals and processing.
The DEA has done nothing with CBD, there has been no scheduling change, there is NO DRUG CODE for CBD. If it is extracted from the plant then it is an Extract and Schedule I if it is made synthetically it’s a different story. You can see what is on what schedule at this link – DEA List of Controlled Substances and Drug Code
CBD is not in the controlled substance schedules or controlled by the DEA. Provided it is not extracted from the Cannabis Plant.