Laws of Washington 1909 c 249 § 204 amended the state's sodomy law to include oral sex, added a clause to specifically criminalize voluntarily submitting to 'carnal knowledge', and lowered the penalty to "imprisonment in the state penitentiary for not more than ten years".

Responding to STATE v. PLACE, the Washington State Legislature adopted the common law definition of "crimes against nature" and established a penalty of "imprisonment at hard labor in the state penitentiary for not less than ten nor more than fourteen years" upon conviction of sodomy.

Section 12 of the Organic Act, which established the Territorial Government of Washington, adopted the laws of the Territory of Oregon applicable to the Territory of Washington as of March 2, 1853, which did not include any reference to sodomy.

The Laws of the Territory of Washington 1875 p 85 § 1 included a vagrancy statute with a catch all definition of "disorderly persons" but did not single out homosexual activity and any arrest was set to only last so far as surety of good behavior could be ascertained.

The Code of Washington 1881, enacted on December 1, 1881, p 159 § 782 stated "All offenses at common law, which are not hereinafter defined by statute are indictable and triable in the district courts of this territory." Thus it was possible to be indicted for 'crimes against nature' however p 162 § 806 criminalized "an assault with an intent to commit the infamous crime against nature" but did NOT criminalize the 'infamous crime against nature'. As such no punishment could be attached to an indictment for homosexual activity except in the case of an assault. This is the precedent that was described in Justice Stiles's opinion in STATE v. PLACE.

On February 18, 1893, in STATE v. PLACE, 5 Wash. 773; 32 P. 736 (1893) the Washington Supreme Court noted the Washington State Penal Code did "not define the crime against nature known as sodomy, nor impose a penalty for its commission.” The crime against nature punishable as a felony at common law was not punishable in the state because no penalty has been fixed by statute.

Not a crime but adoption centers would not let gay couples to adopt.

Blood donation centers in Washington follow the new FDA 3-month deferral guidance.

Blood donation centers followed the non-binding FDA one year deferral guidance.

Ban on blood donations from MSMs applied to any man who has had sex, even once, with another man after 1976.

Conversion Therapy is currently legal. No law currently bans it, despite organizations such as the American Psychological Association denouncing it. Though it's not actually ambiguous (It is in fact legal), this is the best indicator of the available options. An attempt to ban conversion therapy passed overwhelmingly in the State House in 2014, but the bill died in Senate Committee.