Expanding the crime of endangerment with a controlled substance to include fentanyl and other high-potency synthetic opioids.

HB 1087 expands Washington's "endangerment with a controlled substance" law to include fentanyl and other high-potency synthetic opioids, in addition to methamphetamine. It directly affects individuals who knowingly expose dependent children or adults to these substances. The bill amends the law to specifically list fentanyl (and its salts/isomers) and other defined high-potency synthetic opioids as covered substances, making such exposure a class B felony. This change explicitly excludes cases where substances are administered under a valid prescription, as outlined in chapter 69.50 RCW.