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MAPD Help Desk

Email address:   
Help Desk Phone:       1-800-927-8069

Medicare Advantage Prescription Drug (MAPD) Help Desk offers technical and functional support for the Medicare Advantage Health and Prescription Drug Coverage (Parts C and D) Programs.  This insurance coverage is provided by:

  • Medicare Advantage (MA) Plans.
  • Medicare Advantage Prescription Drug (MAPD) Plans.
  • Medicare Prescription Drug Plans (PDPs)
  • Third parties conducting data exchanges with CMS on behalf of MA/MAPD/PDPs.

Technical Support for Plan Connectivity and Access:

  • Startup, testing and implementation for connectivity to CMS systems.
  • Ongoing operational support for data exchanges and system problems.
  • EIDM - Enterprise IDentity Management for CMS system access and password reset inquires and issues.

MAPD Functional Support for Inquires and Issues:

  • Coordination with CMS for beneficiary enrollment, disenrollment, payment and premium topics.
  • MARx UI - Medicare Advantage Prescription Drug User Interface.
  • eRPT - Electronic Retroactive Processing transmission.
  • ELMO - Eligibility Enrollment Medicare Online.
  • COB - Coordination of Benefits files.
  • MDR - Medicaid Drug Rebate State Exchange.

For helpful information about the following topics, please click the link:

Bulletin Board of Current Plan Communications

  • January 15, 2019 – Announcement of the February 2019 Software Release

Please review the memorandum entitled “Announcement of the February 2019 Software Release," from Jennifer R. Shapiro (Acting Director, Medicare Plan Payment Group) and Cathy Carter (Director, Enterprise Systems Solutions Group) dated January 10, 2019, via the Software Release Announcements link.  The memo provides information regarding the Medicare Advantage Prescription Drug software changes, which are scheduled for implementation in February 2019.

  • January 15, 2019 - MARx UI Availability on Saturday, January 19 and Sunday, January 20, 2019

Due to EIDM network maintenance, please be advised that login functionality for the MARx UI and Portal production login are expected to be unavailable during the following timeframes:

o 6:00 AM – 10:00 PM ET on Saturday, January 19
o 6:00 AM – 7:00 PM ET on Sunday, January 20

  • December 3, 2018  – Advance Announcement of the February 2019 Software Release

Please review the memorandum entitled “Advance Announcement of the February 2019 Software Release” from Jennifer Harlow (Deputy Director, Medicare Plan Payment Group) and Cathy Carter (Director, Enterprise Systems Solutions Group) dated November 30, 2018, via the Software Release Announcements link.  The memorandum provides information regarding the planned release of system changes scheduled for February 2019.

  • November 30, 2018 - Plan Communications User Guide (Version 12.3) Now Available

The Centers for Medicare & Medicaid Services has posted a new version (version 12.3) of the Plan Communications User Guide to the MAPD Help Desk website.  Please reference the MAPD Plan Communications User Guide (PCUG) link for the updated Guide.

  • August 3, 2018 – MARx UI Integration with CMS Enterprise Portal Effective August 12, 2018

Effective Sunday, August 12, 2018, access to the MARx UI will be through the CMS Enterprise Portal at  Users will no longer access the MARx UI via  Please refer to the MARx UI-Enterprise Portal Integration Quick Reference Guide in the Download section below.

  • Year 2019 MARx Plan Monthly Calendar Now Available

The MARx Plan Monthly Calendar has been updated to reflect 2019 Plan data due dates, report release dates, enrollment certification due dates, and file transmissions. The 2019 MARx calendar is available for Plans to review via the MAPD/MARx Calendars and Schedules link.

  • Electronic Retroactive Processing Transmission (eRPT) User Manual v3.3

The eRPT Plan User Manual v3.3 has been updated and is available in the Downloads section below.

If you have any questions, please send an email to

  • Important Notice: MAPD Help Desk Information Request Documents

Please use the MAPD Help Desk Information Request Form, and when applicable the Health Insurance Claim Number (HICN) – Medicare Beneficiary Identifier (MBI) Template, and the End Stage Renal Disease (ESRD) Template when requesting information from the MAPD Help Desk.  Use of the form and spreadsheets will help facilitate accurate and timely processing of your request.  Please note that if emailing the spreadsheets they are to be password protected to ensure they are following the CMS Security Policy for PHI/PII.

All documents are provided in the Downloads section in the ZIP file entitled MAPD Help Desk Information Request Documents.

Regularly Scheduled Maintenance

As a reminder, the MARx UI may be unavailable due to Regularly Scheduled Maintenance during the following timeframes:

Daily: 11:00 PM to 12:30 AM ET.

Weekly: Sunday evening at 6:00 PM to Monday morning at 6:00 AM ET.

Also, GENTRAN/TIBCO may be unavailable due to Weekly System Backup during the following timeframe:

Weekly: Sunday Morning at 1:00 AM to approximately 3:00 AM ET.


MARx UI Submission Cut Off Dates

Please reference the following table for the 2019 Plan Data Due dates for MARx transaction submissions.  Cutoff for the submission of MARx transaction files is 8:00 PM (Eastern Time) on the dates listed below:

Payment Month Plan Data Due Date
 January 2019 December 7, 2018
February 2019 January 4, 2019
March 2019 February 8, 2019
April 2019 March 8, 2019
May 2019 April 5, 2019
June 2019 May 10, 2019
July 2019 June 7, 2019
August 2019 July 5, 2019
September 2019 August 9, 2019
October 2019 September 6, 2019
November 2019 October 4, 2019
December 2019 November 8, 2019



Contacting the MAPD Help Desk

Phone: 1-800-927-8069
Hours of Operation: Monday-Friday 8:00 AM to 6:00 PM ET.