Reimbursement of benefits for the treatment of a beneficiary's injuries caused by another person is called:

Insurable interest refers to the financial stake or relationship that an individual has in the insured property or person. It is a fundamental principle in insurance contracts that ensures the policyholder would suffer a financial loss if the insured property is damaged or the insured person experiences harm. This concept is not directly related to seeking reimbursement for treatment costs from a responsible party.

Workers' compensation is a form of insurance that provides wage replacement and medical benefits to employees who are injured in the course of their employment. It is a specific type of insurance that employers are required to carry to cover work-related injuries and illnesses, rather than reimbursement for injuries caused by another person.

Coordination of benefits is a process used by health insurance companies to determine the order of payment when a person is covered by more than one insurance plan. It ensures that the total amount paid by all insurers does not exceed the total cost of the medical treatment. This concept is not directly related to seeking reimbursement for treatment costs from a responsible party.