The Centers for Medicare & Medicaid Services (CMS) requests Medicare Administrative Contractors (MACs) acknowledge and work with modifications to the Common Working File (CWF) related to Medicare Eligibility and Benefit details.
Subject: Common Working File (CWF) to Medicare Beneficiary Database (MBD) Extract File Changes for Detailed Skilled Nursing Facility Data to Support HIPAA Eligibility Transaction System (HETS)
Release Date: October 27, 2017
Effective Date: April 1, 2018
Implementation Date: April 2, 2018
Special Notes: N/A