Washington HCA Apple Health (Medicaid) rulemaking · April 9, 2026 · Primary source
WSR 26-09-041: Applied Behavior Analysis (ABA)
Summary
Washington State's Health Care Authority filed a CR-101 preproposal statement of inquiry on April 9, 2026, signaling intent to amend Medicaid rules governing applied behavior analysis services under WAC 182-531A-0500 through 182-531A-1100. The proposed amendments would clarify required documentation for centers of excellence evaluations, update ABA treatment plan and assessment requirements, and revise prior authorization and recertification procedures. A formal notice of proposed rulemaking (CR-102) will follow, with opportunity for public comment on early drafts.
What this may mean
ABA providers billing Washington Medicaid face potential changes to COE documentation standards, treatment plan content requirements, and prior authorization workflows once the CR-102 is issued and finalized. The scope of changes is not yet defined, as this is a preproposal inquiry stage only; the agency may identify additional related rule changes during its review. Providers and managed care plans administering ABA benefits in Washington should track the CR-102 filing for specific compliance deadlines.
Informational only. Not legal, medical, financial, or other professional advice. Always consult a qualified professional familiar with your specific facts before relying on any item.
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