third-party payer
(1) The term “third-party payer” means an entity that provides an insurance, medical service, or health plan by contract or agreement, including an automobile liability insurance or no fault insurance carrier, and any other plan or program that is designed to provide compensation or coverage for expenses incurred by a beneficiary for health care services or products. Such term also includes entities described in subsection (j) under the terms and to the extent provided in such subsection.