(a) The following are proper claimants:

(1) Officers and employees of OPM;

(2) Former officers and employees of OPM whose claims arose out of incidents which occurred before their separation;

(3) The authorized agent or legal representative of persons in §§ 180.102(a)(1) and 180.102(a)(2);

(4) Survivors of persons in §§ 180.102(a)(1) and 180.102(a)(2) in the following order of precedence:

(i) Spouse,

(ii) Children,

(iii) Father or mother, or both,

(iv) Brothers or sisters, or both.

(b) A claim may not be presented by or for the benefit of a subrogee, assignee, conditional vendor, or other third party.