Current member of the Armed Forces, including a member of the National Guard or Reserves, who is undergoing medical treatment, recuperation, or therapy, is otherwise in outpatient status; or is otherwise on the temporary disability retired list, for a serious injury or illness. Outpatient status means the status of a member of the Armed Forces assigned to either a military medical treatment facility as an outpatient or a unit established for the purpose of providing command and control of members of the Armed Forces receiving medical care as outpatients.