This is the Magellan website for behavioral health providers
Magellan Health

Preparing Claims

Magellan encourages our providers to submit electronic claims. Electronic claims filing allows for earlier detection of errors and drastically reduces the likelihood of claims being rejected or denied for payment, and often results in faster processing. In addition, submitting electronically reduces postage and other paper-related expenses, and supports improvement to your overall efficiency.

You can find claims procedures information in Section 5 of the Magellan National Provider Handbook (PDF).