Wash. Rev. Code § 74.09.220
Any person, firm, corporation, partnership, association, agency, institution or other legal entity, but not including an individual public assistance recipient of health care, that, without intent to violate this chapter or other applicable law, obtains benefits or payments under this code to which such person or entity is not entitled, or in a greater amount than that to which entitled, shall be liable for (1) any excess benefits or payments received, and (2) interest calculated at the rate and in the manner provided in RCW 43.20B.695 or 41.05A.220. Whenever a penalty is due under RCW 74.09.210 or interest is due under RCW 43.20B.695 or 41.05A.220, such penalty or interest shall not be reimbursable by the state as an allowable cost under any of the provisions of this chapter or other applicable law.
RCW 74.09.220
Findings-Intent-Effective date- 2018 c 201 : See notes following RCW 41.05.018.
Severability-Savings-1987 c 283: See notes following RCW 43.20A.020.