Md. Code, State Personnel and Pensions § 22–403

(a) This section applies to a former member who:

(1) was eligible for a retirement allowance under § 22-401 or § 22-402 of this subtitle when the former member's membership terminated;

(2) did not submit a written application under § 22-401 or § 22-402 of this subtitle before membership terminated; and

(3) has not withdrawn accumulated contributions.

(b) (1) A former member described in subsection (a) of this section may retire with a retirement allowance under § 22-401 or § 22-402 of this subtitle on the first day of the month after the Board of Trustees receives a written application for retirement from the former member.

(2) A former member who retires under this section may not receive benefits for the period before the former member submitted a completed application for retirement to the Board of Trustees.