![](/_ui/responsive/common/images/BTM_Logo_4c_RGB.png)
Your Partner in EMS
Electronic Class II Controlled Substance Ordering
Easily order class II controlled substances through our secure electronic Controlled Substances Ordering System (CSOS) without the supporting paper DEA Form 222.
What is the CSOS Program?
CSOS was developed by the DEA for the electronic transmission of Class II controlled substances orders. It is the only allowance for electronic ordering of Class II controlled substances.
![Cart icon](https://cdn.boundtree.com/assets/btm/CSOS/Icon_Ordering Freedom.png)
Ordering Freedom
CSOS has no line item limit for a single order
![Arrow icon](https://cdn.boundtree.com/assets/btm/CSOS/Icon_Decreased Cost.png)
Decreased Cost
Order accuracy and decreased paperwork lower the transaction cost
![Checkmark icon](https://cdn.boundtree.com/assets/btm/CSOS/Icon_Reduce Errors.png)
Reduce Errors
Ordering electronically reduces the number of ordering errors
![Timer icon](https://cdn.boundtree.com/assets/btm/CSOS/Icon_Faster Transactions.png)
Faster Transactions
Timely validation by the supplier allowing for faster transaction times