42 CFR § 407.22 - Request for individual enrollment.
(1) Is not entitled to hospital insurance;
(2) Has previously declined enrollment in SMI;
(3) Has had a previous period of SMI entitlement which terminated;
(5) Is enrolling or reenrolling during a special enrollment period under § 407.20.
(b) A request for enrollment under paragraph (a) of this section must:
(1) Be signed by the individual or someone acting in his or her behalf; and