Oregon Expands Medicaid Coverage for Residential Addiction Treatment
Oregon's Health Authority finalized rules expanding Medicaid reimbursement for residential substance use disorder treatment, increasing per-diem rates and lifting prior-authorization barriers for adults.
Oregon's Health Authority finalized new Medicaid rules this week that expand reimbursement for residential addiction treatment, increasing per-diem rates and removing prior-authorization barriers that providers said were keeping people out of beds that were already empty.
The changes take effect July 1, 2026.
What Changed
The new rules cover three substantive shifts:
- Per-diem rates for residential SUD treatment increase by 18%, the first adjustment since 2021.
- Prior authorization is eliminated for the first 30 days of residential care for Medicaid enrollees aged 21 and older.
- Co-occurring disorder treatment — care for substance use combined with mental health conditions like depression, PTSD, or bipolar disorder — is now reimbursed at the same rate as standalone SUD treatment, ending a longstanding gap.
State officials estimate the changes will free an additional 2,400 residential treatment slots over the next year, primarily in rural counties where facilities had reduced Medicaid intake because of low reimbursement.
Why Providers Pushed For It
Residential treatment providers in Oregon have warned for two years that Medicaid rates were not keeping pace with staffing costs. The Oregon Substance Use Disorder Treatment Association reported in early 2026 that 23 of the state's 71 licensed residential facilities had either reduced Medicaid beds or stopped accepting Medicaid patients entirely.
"Facilities were not turning Medicaid patients away because they didn't want to help them," said one Portland-area treatment director who was part of the rulemaking process. "They were turning them away because the rate didn't cover the cost of a counselor's salary plus the room. The math wasn't working."
The rate increase brings Oregon roughly in line with Washington and California, both of which raised their Medicaid SUD rates in 2024.
What This Means For People Seeking Treatment
For Oregon residents on Medicaid (the Oregon Health Plan), the practical implications are:
- Faster intake. Residential facilities can admit eligible patients without waiting for prior authorization for the first 30 days, removing a delay that often pushed people back into use before they reached treatment.
- More open beds. Facilities that had stopped taking Medicaid are expected to resume admissions once the higher rates take effect.
- Integrated care. People with both substance use and mental health diagnoses can receive both treatments in the same residential setting without separate billing approval.
Oregon residents needing help finding a facility can call the Oregon Health Authority's Behavioral Health Treatment Locator or SAMHSA's National Helpline at 1-800-662-4357.
What This Does Not Change
The new rules do not address several gaps providers have been asking the state to close:
- Waitlists in metro areas remain long; the rate increase will not create new physical beds in Multnomah, Washington, or Lane counties without separate capital investment.
- Workforce shortages — particularly for licensed alcohol and drug counselors — are still acute. Rate increases help facilities pay more but do not produce more counselors.
- Coverage for adolescents under 21 still requires prior authorization for residential placement, a point disability-rights advocates flagged during the public comment period.
The Oregon Health Authority has committed to reviewing the adolescent prior-authorization carve-out by the end of 2027.
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