Dear Valued Service Provider: Please be alerted that beginning on March 4, 2016, at 11:00 p.m. CST until 11:45 p.m. CST on March 4, 2016 Optum Rx will experience a Point of Sale Claims Processing Outage on a portion of our business. The outage is due to an Optum Rx scheduled system enhancement. Please reprocess claims after 11:45 p.m. CST on March 4, 2016. Due to this maintenance we would like to remind you that there may be a delay in the posting of your 835 files by 1-2 business days for the affected pay cycle. Optum Rx apologizes for any inconvenience this may cause. Optum Rx strives to prevent system processing outages. Your assistance in servicing patients and resubmitting claims is greatly appreciated.

March 2, 2016     Dear Valued Provider,     Due to system maintenance at Prime Therapeutics, our claims processing system will be unavailable for claims adjudication during the time frame listed below.   Saturday March 5, 2016 11:00 p.m. to Sunday March 6, 2016 3:00 a.m. (Central Time)     During this downtime, claims will not be processed.  Please communicate this information to your pharmacies.   If you have any questions regarding processing claims, please call the Prime Contact Center at 800.821.4795.     Thank you,   Pharmacy Network Management Prime Therapeutics LLC

Dear Valued Provider, Due to system maintenance at Prime Therapeutics, our claims processing system will be unavailable for claims adjudication during the time frame listed below. Saturday February 20, 2016 11:00 p.m. to Sunday February 21, 2016 2:00 a.m. (Central Time) During this downtime, claims will not be processed.  Please communicate this information to your pharmacies. If you have any questions regarding processing claims, please call the Prime Contact Center at 800.821.4795. Thank you, Pharmacy Network Management Prime Therapeutics LLC

Dear Valued Provider, Due to system maintenance at Prime Therapeutics, our claims processing system will be unavailable for claims adjudication during the time frame listed below. Saturday January 16, 2016 11:00 p.m. to Sunday January 17, 2016 1:00 a.m. (Central Time) During this downtime, claims will not be processed.  Please communicate this information to your pharmacies. If you have any questions regarding processing claims, please call the Prime Contact Center at 800.821.4795. Thank you, Pharmacy Network Management Prime Therapeutics LLC Prime Therapeutics made the following annotations --------------------------------------------------------------------- CONFIDENTIALITY NOTICE: The information contained in this communication may be confidential, and is intended only for the use of the recipients named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please return it to the sender immediately and delete the original message and any copy of it from your computer system. If you have any questions concerning this message, please contact the sender.