RCW 48.43.081
Retroactive application- 2012 c 100 : "Section 1 of this act applies retroactively to July 22, 2011, so that no entity is liable for having presented or caused to be presented a claim, bill, or demand for payment to a direct patient-provider primary care practice in accordance with section 1(1)(d) of this act." [2012 c 100 s 2.]