(a) Except as required under federal law, self-attestation shall not be accepted for any of the following eligibility factors without verification prior to enrollment in the medicaid program:

(i) Income in excess of zero dollars ($0.00);

(ii) Residency;

(iii) Identity;

(iv) Except for any presumptive eligibility period, citizenship or immigration status.

(b) The department shall not rely on self-attestation to establish any medicaid eligibility factor unless expressly required by federal law.