(1) The medicaid agency requires a provider to seek timely reimbursement from a responsible third party when a client has available third-party resources, except as described under subsections (2) and (3) of this section. Responsible third parties include health insurers and other third parties legally liable for health care items and services received by clients.

(2) The agency pays for medical services and seeks reimbursement from a ((liable))responsible third party when the claim is for preventive pediatric services as covered under the early and periodic screening, diagnosis and treatment (EPSDT) program.

(3) The agency pays for medical services and seeks reimbursement from any ((liable))responsible third party when both of the following apply:

(a) The provider submits to the agency documentation of billing the third party and the provider has not received payment after ((one hundred))100 days from the date of services; and

(b) The claim is for a covered service provided to a client on whose behalf the office of support enforcement is enforcing a noncustodial parent to pay support. For the purpose of this section, "is enforcing" means the noncustodial parent either:

(i) Is not complying with an existing court order; or

(ii) Received payment directly from the third party and did not pay for the medical services.

(4) Responsible third parties, except those identified in subsection (5) of this section, must:

(a) Respond within 60 days to any agency inquiry regarding a claim for payment for any health care item or service submitted within three years after the date the item or service was provided; and

(b) Not deny a claim submitted by the agency solely based on:

(i) The submission date of the claim;

(ii) The type or format of the claim form;

(iii) Lack of prior authorization under the responsible third-party's rules; or

(iv) Any other requirement as described in RCW 74.09A.030.

(5) The following programs found in Title XVIII of the federal Social Security Act are exempt from subsection (4) of this section:

(a) The original medicare fee-for-service program under parts A and B;

(b) A medicare advantage plan offered by a medicare advantage organization under part C;

(d) A health care prepayment plan under section 1833 of the federal Social Security Act; or

(e) A prescription drug plan offered under part D that requires prior authorization for an item or service furnished to a person eligible to receive medical assistance under Title XIX of the federal Social Security Act.

(6) The provider may not bill the agency or the client for a covered service when a third party pays a provider the same amount as or more than the agency rate.

(((5)))(7) When the provider receives payment from a third party after receiving reimbursement from the agency, the provider must refund to the agency the amount of the:

(a) Third-party payment when the payment is less than the agency's maximum allowable rate; or

(b) Agency payment when the third-party payment is equal to or more than the agency's maximum allowable rate.

(((6)))(8) The agency does not pay for medical services if third-party benefits are available to pay for the client's medical services when the provider bills the agency, except under subsections (2) and (3) of this section.

(((7)))(9) The client is liable for charges for covered medical services that would be paid by the third-party payment when the client either:

(a) Receives direct third-party reimbursement for the services; or

(b) Fails to execute legal signatures on insurance forms, billing documents, or other forms necessary to receive insurance payments for services rendered. See WAC 182-503-0540 for assignment of rights.

(((8)))(10) The agency considers an adoptive family to be a third-party resource for the medical expenses of the birth ((mother))parent and child only when there is a written contract between the adopting family and either the birth ((mother))parent, the attorney, the provider, or the adoption service. The contract must specify that the adopting family will pay for the medical care associated with the pregnancy.

(((9)))(11) A provider cannot refuse to furnish covered services to a client because of a third-party's potential liability for the services.

(((10)))(12) For third-party liability on personal injury litigation claims, the agency or managed care organization (MCO) is responsible for providing medical services under WAC 182-501-0100.