Version 4.0 is available on the Centers for Medicare & Medicaid Services (CMS) Web site to download, for FREE. Adding support for Microsoft Windows 7 (32 or 64 bit), Vista (32 or 64 bit) and XP (32 or 64 bit).
Codes.ini file for Remittance Advice Remark Codes and Claim Adjustment Reason Code were also updated. See "How to Update (Import the CARC/RARC codes" in the MREP instructions. Installing Version 4.0 includes the new codes.