Health insurers, as a condition of doing business in Washington, must:
(1) Provide, with respect to individuals who are eligible for, or are provided, medical assistance under chapter
74.09 RCW, upon the request of the authority, information to determine during what period the individual or their spouses or their dependents may be, or may have been, covered by a health insurer and the nature of coverage that is or was provided by the health insurer, including the name, address, and identifying number of the plan, in a manner prescribed by the authority;
(2) Accept the authority's right to recovery and the assignment to the authority of any right of an individual or other entity to payment from the party for an item or service for which payment has been made under chapter
74.09 RCW;
(3) Respond to any inquiry by the authority regarding a claim for payment for any health care item or service that is submitted not later than three years after the date of the provision of such health care item or service;
(4) Agree not to deny a claim submitted by the authority solely on the basis of the date of submission of the claim, the type or format of the claim form, or a failure to present proper documentation at the point-of-sale that is the basis of the claim, if:
(a) The claim is submitted by the authority within the three-year period beginning on the date the item or service was furnished; and
(b) Any action by the authority to enforce its rights with respect to such claim is commenced within six years of the authority's submission of such claim; and
(5) Agree that the prevailing party in any legal action to enforce this section receives reasonable attorneys' fees as well as related collection fees and costs incurred in the enforcement of this section.