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Technical Refresh Reminder - Phase I Implementation

May 20, 2019

MassHealth Electronic Data Interchange (EDI) Trading Partners must prepare for and participate in the Technical Refresh Phase I Trading Partner Testing (TPT). Phase I TPT will be conducted between 7/29/19 - 9/20/19, and includes the implementation of the eligibility transaction. If you currently submit and receive the following HIPAA transaction you must participate in TPT to validate that you will be able to send and receive the transaction, as well as the corresponding HIPAA (999/TA1) Implementation Acknowledgement for Health Care Insurance, successfully in production:

  • Health Care Benefit Inquiry and Response (270/271)

All Trading Partners must complete the following activities immediately in order to prepare for TPT and implementation:

  • Visit to review the important information and download the updated MassHealth Companion Guides
  • Review the updated Companion Guides and assess any impacts to your business processes and systems
  • Modify your systems, where appropriate
  • Please stay tuned to register for upcoming fall information sessions that will be available soon at
  •  Prepare and submit your test file during the TPT timeframe 

Please note that your transactions may be rejected if you do not fully comply with the Technical Refresh requirements.

If you have any questions regarding this message, please contact the MassHealth Customer Service Center at 1-800-841-2900 or If you are not the person within your organization that handles EDI testing, please forward this information along to the appropriate resources, including your vendor.