Webafter successful registration, please refer to the mycgs registration guide for information on adding additional trading partner ids. Webmycgs may be used to verify, not determine, medicare beneficiary eligibility. Unauthorized transactions include attempting to acquire the medicare beneficiary's medicare id when. Webdme mycgs gives you access to claim status, beneficiary eligibility, payment information, detailed denial explanations, and more. Enjoy the convenience and time saving benefits. Webthe mycgs registration guide provides instructions on what you and your coworkers need to do to successfully register for mycgs, update your user profile, and add additional. Webas a workaround, please complete a redetermination submission using the clam status summary screen. Check out the following resources: