Code of Federal Regulations Title 28. Judicial Administration § 28.43.2 Obligations of persons receiving care and treatment

(1) To assign in writing to the United States his claim or cause of action against the third person to the extent of the reasonable value of the care and treatment furnished or to be furnished, or any portion thereof;

(2) To furnish such information as may be requested concerning the circumstances giving rise to the injury or disease for which care and treatment is being given and concerning any action instituted or to be instituted by or against a third person;

(3) To notify the Department or Agency concerned of a settlement with, or an offer of settlement from, a third person;  and

(4) To cooperate in the prosecution of all claims and actions by the United States against such third person.