CMS announcement: .
CMS will begin revoking access to Common Working File (CWF) eligibility transactions HIQA, HIQH, ELGA and ELGH effective February 1, 2020. Submitters that aggregate transactions for otherwise disparate providers (e.g., clearinghouses, billing services, software vendors, etc.) and have both HETS and CWF based eligibility access should use HETS exclusively. CMS will remove HIQA/HIQH/ELGA/ELGH access for these submitters by revoking role-based access for specific CMS RACF IDs. CMS will revoke access starting with high-volume aggregators. Aggregators that use both HETS and CWF based eligibility should assume they must use HETS only no later than February 1, 2020.