Multimorbidity is now a central test of internal medicine performance because patients rarely arrive with a single, guideline-contained disease. In Saudi Arabia, longer life expectancy, diabetes, cardiovascular disease, obesity, respiratory disease, cancer survivorship and mental health need are converging with Vision 2030 reforms that emphasise prevention, digital transformation and accountable value. This review develops a practical framework for managing multimorbidity in internal medicine to improve Saudi healthcare system efficiency. A narrative review methodology was used, prioritising peer-reviewed literature and policy evidence published from 2020 to 2025 on multimorbidity, integrated care, chronic disease management, Saudi health transformation, primary care redesign, digital health, medication optimisation and value-based healthcare. The paper proposes a five-part framework: population risk stratification, shared goal-oriented care planning, internal medicine coordination hubs, digital continuity, and outcomes-based governance. The model is intended to reduce fragmentation, duplicate testing, preventable admission, adverse drug events and delayed escalation while preserving person-centred decision-making. The review argues that Saudi internal medicine departments can become coordination engines between primary care, subspecialties, emergency departments and community services. Efficiency should therefore be measured not only by throughput, but by continuity, avoidable utilisation, patient-reported outcomes, medication safety, equity and clinician workload. Implementation requires interoperable records, clinical pharmacy, nurse coordination, mental health integration, telemedicine, home monitoring, and cluster-level dashboards aligned with the Health Sector Transformation Program. The framework offers an adaptable roadmap for hospitals and health clusters seeking Scopus-level evidence translation into operational improvement.
Ziaur Rahman (Sat,) studied this question.