Maryland State Personnel and Pensions Section 21-602
§ 21-602.
  (a)   Except as provided in subsections (b) and (c) of this section, a participant may elect on the form the Board of Trustees requires to have all or any part of an eligible rollover distribution paid to the eligible retirement plan in a direct rollover.
  (b)   If an eligible rollover distribution is payable to the surviving spouse of a member, former member, or retiree, the surviving spouse may only elect to have all or any part of the eligible rollover distribution paid in a direct rollover to an individual retirement account or individual retirement annuity.
  (c)   A member who is eligible to participate in the plan administered by the supplemental plan under Title 35, Subtitle 5 of this article may elect to have all or any part of the eligible rollover distribution paid in a direct rollover to the plan in accordance with the regulations adopted by the supplemental plan.