CMS Pub. 100-05, ch. 6, § 40.6

The term Medicare beneficiary identifier (Mbi) is a general term describing a

beneficiary's Medicare identification number. For purposes of this manual, Medicare

beneficiary identifier references both the Health Insurance Claim Number (HICN) and

the Medicare Beneficiary Identifier (MBI) during the new Medicare card transition

period and after for certain business areas that will continue to use the HICN as part of

their processes.

The MSP data may be viewed online in CWF via the HIMR access. The user enters the

transaction HIMR, which displays the HIMR Main Menu, and enters the MSPA

selection. (A complete record layout and field descriptions can be found in the CWF

Systems Documentation at http://cms.csc.com/cwf/, Record Name: MSP Auxiliary File

and MSP Audit History File.)

A user can view a selected CWF, MSP auxiliary record by following the steps outlined

below:

A. Enter the Medicare beneficiary identifier and MSP record type.

If the data entered is invalid, an error message is displayed with the field in error

highlighted. If the data entries are valid, a search is done of the beneficiary master file for

an MSP indicator. The search of the master file will show one of the following:

• The MSP indicator on the beneficiary file is not set. In this case the message

"MSP not indicated" is displayed;

• No record is found. In this case, a message "MSP auxiliary file not found" is

displayed; or

• MSP is indicated. In this case, the MSP auxiliary file is read and the screen will

display an MSP Record.

A successful reading of the MSP file, as noted in the third bullet above, will display an

MSP occurrence summary screen that includes:

• Summary selection number;

• MSP code;

• MSP code description;

• Validity indicator;

• Delete indicator;

• Effective date; and

• Termination date, if applicable.

B. Enter the summary selection number on the MSP occurrence summary screen.

This results in a display of the MSP occurrence detail screen for the selected MSP

occurrence. The MSP occurrence detail screen is a full display of the information on the

MSP auxiliary file for the particular MSP occurrence.