(1) For the purposes of this section, "good cause" means that the use of the third-party coverage would violate a client's confidentiality because the third party:

(a) Routinely sends written, verbal, or electronic communications, as defined in RCW 48.43.505, to the third-party subscriber and that subscriber is someone other than the client; or

(b) Requires the client to use a primary care provider who is likely to report the client's request for family planning services to the subscriber.

(2) Clients eligible for family planning only programs may request an exemption from the requirement to bill third-party insurance due to "good cause" if they are:

(a) Eighteen years of age or younger and seeking services in confidence; or

(b) Domestic violence victims and seeking services in confidence.