EDI mailbox ID and password criteria
About EDI mailbox ID and password
To help maintain the confidentiality of Medicare beneficiary information and other protected health information (PHI), The Centers for Medicare and Medicaid Services (CMS) requires a mailbox ID and a password to access the electronic data interchange (EDI) mailbox. You need a mailbox ID and a password to use the EDI Gateway system.
Providers who wish to migrate to the EDI Gateway must first complete and submit an EDI enrollment form 
, and a new installation form . Upon successful enrollment, FCSO will assign a unique mailbox ID and an initial password to the provider. This information will be either faxed or mailed, via postal service, to the address on file. For security reasons, this information cannot be emailed.
, and a new installation form . Upon successful enrollment, FCSO will assign a unique mailbox ID and an initial password to the provider. This information will be either faxed or mailed, via postal service, to the address on file. For security reasons, this information cannot be emailed. The mailbox ID and password together are your logon command in your billing software and must remain current to avoid transmission disruptions.
Mailbox ID criteria
• Mailbox IDs are case sensitive.
• They may contain upper or lower case letters [A-Z, a-z] or numbers [0-9], are exactly 9 characters long.
• The mailbox ID does not expire and must be entered exactly as given.
Password criteria
• The password expires every 60 days.
• Passwords must be exactly 8 characters long and may contain a combination of letters and numbers, but the letters must be upper case.
• Passwords may not be repeated within 10 updates and must differ from previous passwords by at least 4 characters.
• Passwords may not be the same as your mailbox ID.
• You cannot use the word “PASSWORD.”
Contacts
If you have completed and submitted an EDI enrollment form and have not received your mailbox ID and password please contact EDI Enrollment at 888-670-0940 option -4.
For information regarding entering you mailbox ID and password in your billing software, contact your software vendor.
If you use the PC-ACE Pro32™ software, contact Medicare EDI software support at 888-670-0940 option -2 for assistance.
For assistance changing your password on the FCSO website, contact Medicare EDI transaction support at 888-670-0940 option -1 for assistance.