(a) The purpose of this subchapter is to:(1) permit carriers to include a coordination of benefits (COB) provision in their plans;(2) identify plans with which COB is allowed;(3) establish an order in which plans with a COB provision must pay their claims;(4) reduce duplication of benefits by permitting a reduction of the benefits to be paid by plans that do not have to pay their benefits first; and(5) provide greater efficiency in the processing of claims when a person is covered under more than one plan.(b) Severability. If a court of competent jurisdiction holds that any provision of this subchapter or its application to any person or circumstance is invalid for any reason, the invalidity does not affect other provisions or applications of this subchapter that can be given effect without the invalid provision or application, and to this end the provisions of this subchapter are severable.