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  • ePHI and Sensitive Regulated Data

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  • The MiChart Patient Portal ( should be used for communication between providers and patients. The portal has a limit of 5 MB per message.
  • MiShare is best for file exchange, including the transfer of image files (screen shots, pictures, or scanned images/PDFs). MiShare can accommodate over 25 MB of data. Documents sent via MiShare stay on the server 5 days and then are deleted.
  • U-M Box is for file storage, not transfer. M+Box can also accommodate a transfer of over 25 MB of data. Students, staff and faculty at the U-M are all entitled to have a 50 GB M+Box account.

Visit the Encryption - UMHS Policy 1-04-502 Guide page for more information regarding the transfer and encryption of sensitive information.

UMHS Policy for De-identification


This page is intended to act as a quick reference. See UMHS Policy 01-04-340 - De-identification and Re-identification of Protected Health Information (PHI) for the most recent version of the following information.