42 CFR § 435.603
Basis, scope, and implementation.
(1) This section implements section 1902(e)(14) of the Act.
(2) Effective January 1, 2014, the agency must apply the financial methodologies set forth in this section in determining the financial eligibility of all individuals for Medicaid, except for individuals identified in paragraph (j) of this section and as provided in paragraph (a)(3) of this section.
(3) In the case of determining ongoing eligibility for beneficiaries determined eligible for Medicaid coverage to begin on or before December 31, 2013, application of the financial methodologies set forth in this section will not be applied until March 31, 2014 or the next regularly-scheduled renewal of eligibility for such individual under § 435.916 of this part, whichever is later.