TY - JOUR AU - E. F. Kyei AU - M. N. Mumba A1 - AB - BACKGROUND: Medicare serves 65 million Americans aged 65+, with 3.7% having co-occurring mental health and substance use disorders. Despite evidence supporting integrated care, fragmented Medicare policies result in higher readmissions and lower treatment completion rates for this vulnerable population. PURPOSE: To analyze Medicare policies using the Integration Continuum Framework and identify nursing practice and policy implications for older adults with dual diagnoses. METHODS: Systematic review of Medicare policy documents (2010-2023) analyzed through the Integration Continuum Framework across clinical, financial, and administrative dimensions. DISCUSSION: Medicare policies predominantly reflect minimal integration (Levels 1-2). Only 17.3% of beneficiaries with co-occurring disorders receive coordinated care, requiring visits to 3.7 providers across 2.8 facilities compared to 1.9 providers at 1.6 facilities for single diagnoses. The Collaborative Care Model achieves Level 3 integration but excludes substance use disorders, limiting comprehensive care. CONCLUSION: Medicare's fragmented approach creates significant coordination challenges. Nurses are uniquely positioned to bridge these gaps through screening protocols, care navigation, and leadership initiatives. Policy reforms including expanding the Collaborative Care Model to include substance use disorders, eliminating same-day billing restrictions, and streamlining documentation represent pathways toward comprehensive Level 4-5 integration, ultimately improving outcomes for older adults with dual diagnoses. AD - Capstone College of Nursing, The University of Alabama, Tuscaloosa, AL; Center for Substance Use Research and Related Conditions, Capstone College of Nursing, The University of Alabama, Tuscaloosa, AL. Electronic address: efkyei@ua.edu.; Capstone College of Nursing, The University of Alabama, Tuscaloosa, AL; Center for Substance Use Research and Related Conditions, Capstone College of Nursing, The University of Alabama, Tuscaloosa, AL. AN - 41005007 BT - Nurs Outlook C5 - Opioids & Substance Use; Healthcare Disparities; Education & Workforce CP - 6 DA - Sep 25 DO - 10.1016/j.outlook.2025.102550 DP - NLM ET - 20250925 IS - 6 JF - Nurs Outlook LA - eng N2 - BACKGROUND: Medicare serves 65 million Americans aged 65+, with 3.7% having co-occurring mental health and substance use disorders. Despite evidence supporting integrated care, fragmented Medicare policies result in higher readmissions and lower treatment completion rates for this vulnerable population. PURPOSE: To analyze Medicare policies using the Integration Continuum Framework and identify nursing practice and policy implications for older adults with dual diagnoses. METHODS: Systematic review of Medicare policy documents (2010-2023) analyzed through the Integration Continuum Framework across clinical, financial, and administrative dimensions. DISCUSSION: Medicare policies predominantly reflect minimal integration (Levels 1-2). Only 17.3% of beneficiaries with co-occurring disorders receive coordinated care, requiring visits to 3.7 providers across 2.8 facilities compared to 1.9 providers at 1.6 facilities for single diagnoses. The Collaborative Care Model achieves Level 3 integration but excludes substance use disorders, limiting comprehensive care. CONCLUSION: Medicare's fragmented approach creates significant coordination challenges. Nurses are uniquely positioned to bridge these gaps through screening protocols, care navigation, and leadership initiatives. Policy reforms including expanding the Collaborative Care Model to include substance use disorders, eliminating same-day billing restrictions, and streamlining documentation represent pathways toward comprehensive Level 4-5 integration, ultimately improving outcomes for older adults with dual diagnoses. PY - 2025 SN - 0029-6554 SP - 102550 ST - Medicare's integration imperative: A policy analysis of care coordination barriers for older adults with co-occurring mental health and substance use disorders T1 - Medicare's integration imperative: A policy analysis of care coordination barriers for older adults with co-occurring mental health and substance use disorders T2 - Nurs Outlook TI - Medicare's integration imperative: A policy analysis of care coordination barriers for older adults with co-occurring mental health and substance use disorders U1 - Opioids & Substance Use; Healthcare Disparities; Education & Workforce U3 - 10.1016/j.outlook.2025.102550 VL - 73 VO - 0029-6554 Y1 - 2025 ER -