Washington Revised Code Title 9A. Washington Criminal Code § 9A.44.100. Indecent liberties

(a) By forcible compulsion;

(b) When the other person is incapable of consent by reason of being mentally defective, mentally incapacitated, or physically helpless;

(c) When the victim is a person with a developmental disability and the perpetrator is a person who:

(d) When the perpetrator is a health care provider, the victim is a client or patient, and the sexual contact occurs during a treatment session, consultation, interview, or examination. It is an affirmative defense that the defendant must prove by a preponderance of the evidence that the client or patient consented to the sexual contact with the knowledge that the sexual contact was not for the purpose of treatment;

(e) When the victim is a resident of a facility for persons with a mental disorder or substance use disorder and the perpetrator is a person who has supervisory authority over the victim; or

(f) When the victim is a frail elder or vulnerable adult and the perpetrator is a person who:

(2)(a) Except as provided in (b) of this subsection, indecent liberties is a class B felony.

(b) Indecent liberties by forcible compulsion is a class A felony.