Program_Memos / 2001 / AB-01-156

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Note:  The following article synopsis was NOT provided by HCPro. It was created by Find-A-Code/innoviHealth.

Article Overview

This article is a CMS Program Memorandum for intermediaries and carriers that explains changes to Common Working File source identifiers, contractor numbering, and related tracking fields used in coordination-of-benefits recordkeeping. It is relevant to Medicare administrative staff, claims processing teams, and systems personnel who need to understand the scope, timing, and documentation updates associated with the change request.

Why This Topic Matters

The memorandum affects how Medicare coordination-of-benefits activities are tracked in CWF and related workload reporting systems. Readers working with claims administration, systems maintenance, or program integrity may need the policy and implementation context covered here.

Article Sections

  1. Change Request 1923

    Introduces the change request and frames the administrative update addressed by the memorandum.

  2. Subject: Expanding the Number of Source Identifiers for Common Working File (CWF) MSP Records

    Summarizes the scope of the update involving CWF recordkeeping, contractor identifiers, and related Medicare coordination-of-benefits tracking fields.

  3. Chart 1

    Provides an initial mapping of source codes, contractor numbers, and related reporting identifiers used in the existing structure.

  4. Chart 2

    Presents additional contractor number assignments and associated source and reporting identifiers for the expanded structure.

  5. Effective Date, Implementation Date, and Retention Guidance

    States the effective and implementation timing for the memorandum and notes the administrative retention period.

What You Will Learn

  • The general purpose of the CWF source identifier expansion
  • How contractor numbering and reporting fields are being updated
  • The implementation and effective-date context for the program memorandum
  • Which organizations and administrative workflows are affected by the change

Who Should Read This

  • Medicare intermediaries
  • Medicare carriers
  • CMS program staff
  • Claims processing administrators
  • Systems and operations personnel

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