Requires the state health care authority to: (1) Oversee the coordination of resources and services through the managed health care system and tribal organizations providing health care services for children who are eligible for medical assistance and have been identified as requiring mental health treatment;

(2) Require provider payment for annual depression screening for certain youth; and

(3) Require provider payment for maternal depression screening for mothers of children ages birth to six months.

Requires the department of early learning to establish a child care consultation program linking child care providers with evidence-based, trauma-informed, and best practice resources regarding caring for infants and young children who present behavioral concerns or symptoms of trauma.

Requires the office of the superintendent of public instruction to establish a competitive application process to designate two educational service districts in which to pilot one lead staff person for children's mental health and substance use disorder services.

Requires Washington State University to offer one twenty-four month residency position that is approved by the accreditation council for graduate medical education to one resident specializing in child and adolescent psychiatry.

Requires a behavioral health organization to, upon initiation or renewal of a contract with the department of social and health services or the state health care authority, reimburse a provider for a behavioral health service provided to a covered person who is under eighteen years old through telemedicine or store and forward technology.