Residency · Residency · Family Medicine
Screening for Social Determinants of Health
Overview
Social determinants of health (SDOH) are the conditions in which people are born, grow, live, work, and age. These non-medical factors, including income, education, housing, and social support, account for an estimated 30 to 55% of health outcomes, far exceeding the contribution of clinical care alone. Family physicians are uniquely positioned to identify and address SDOH through systematic screening, effective referral pathways, and community resource navigation.
Defining SDOH Domains
The SDOH framework is typically organized into five interconnected domains. Economic stability encompasses employment, income, food security, and housing stability. Education access and quality includes literacy, language barriers, and educational attainment. Healthcare access and quality covers insurance status, provider availability, and health literacy. Neighborhood and built environment addresses transportation, physical safety, environmental exposures, and access to healthy food options. Social and community context includes social isolation, experiences of discrimination, incarceration history, and adverse childhood experiences.
Validated Screening Tools
Comprehensive Instruments
Several validated instruments allow systematic SDOH screening in clinical settings. The PRAPARE tool (Protocol for Responding to and Assessing Patients' Assets, Risks, and Experiences) is a 15-item questionnaire covering housing, food, transportation, employment, education, social support, stress, and safety. The AHC HRSN screening tool, developed by CMS for the Accountable Health Communities model, is a 10-item instrument addressing housing instability, food insecurity, transportation barriers, utility difficulties, and interpersonal safety. The SIREN network (Social Interventions Research and Evaluation Network) serves as a clearinghouse for evidence-based social care tools.
Domain-Specific Screens
When a focused assessment is more appropriate, domain-specific screens are available. The Hunger Vital Sign is a highly efficient two-item food insecurity screen ("Within the past 12 months, we worried whether our food would run out...") with a sensitivity of 97% and specificity of 83%. Single-item screens can identify housing instability and homelessness risk. For interpersonal violence, validated tools include the HITS questionnaire (Hurt, Insult, Threaten, Scream), the SAFE questions, and the STAT tool. A single question about whether lack of transportation has prevented a patient from keeping medical appointments effectively identifies transportation barriers. Social isolation can be assessed using the UCLA 3-item Loneliness Scale or PROMIS Social Isolation measures.
Implementation Strategies
Workflow Integration
Successful SDOH screening requires thoughtful workflow design. Screening can be administered at intake using patient-facing tablets, paper forms, or patient portal questionnaires completed before the visit. Annual screening with interval rescreening for high-risk patients is a reasonable cadence. Front desk and nursing staff should be trained on administration and scoring. Integration into the EHR with structured data fields and clinical decision support allows automated flagging of positive screens and generation of referral lists.
Who Should Be Screened
Universal screening is preferred over targeted approaches because it reduces the stigma associated with being singled out for social needs assessment. Targeted screening based on insurance status or demographics risks reinforcing bias and missing patients who do not fit expected profiles. High-yield screening opportunities include prenatal visits, well-child checks, chronic disease management encounters, emergency department visits, and hospital discharge planning.
Addressing Positive Screens
When a screen is positive, the response should follow a structured approach. Begin by acknowledging and normalizing the finding: "Many of our patients face these challenges. We want to connect you with resources." Assess urgency, as immediate safety concerns such as intimate partner violence or homelessness require same-day intervention. Provide a warm handoff, meaning a direct, real-time connection to a community health worker, social worker, or patient navigator, rather than simply handing the patient a pamphlet. Implement closed-loop referral tracking to confirm that the patient connected with the resource and to follow up on outcomes. Document SDOH conditions in the EHR using ICD-10 Z-codes (Z55 through Z65).
Community Resource Navigation
Maintaining an updated community resource directory is essential. Digital platforms such as findhelp.org (formerly Aunt Bertha), Unite Us, and NowPow can streamline the process of identifying local resources. Community health workers (CHWs) serve as highly effective intermediaries between clinical settings and community organizations. Building relationships with local food banks, housing authorities, legal aid organizations, and transportation services creates a functional referral network.
Evidence Base
Impact of SDOH on Health Outcomes
The health consequences of unmet social needs are substantial and well-documented. Food insecurity is associated with a two- to three-fold increased risk of diabetes, hypertension, and depression. Housing instability increases emergency department visits by approximately 30% and contributes to delayed medication adherence. Social isolation carries a mortality risk equivalent to smoking 15 cigarettes per day. Transportation barriers result in missed medical appointments for 3.6 million Americans annually. Adverse childhood experiences are dose-dependent: a score of four or more is associated with double the risk of heart disease and quadruple the risk of depression.
Evidence for Screening
The CMS Accountable Health Communities Model demonstrated that screening paired with navigation services reduces emergency department visits and inpatient utilization. Multiple studies confirm that SDOH screening is feasible and acceptable to patients, with over 85% finding it appropriate. However, the evidence is limited that screening alone, without meaningful resource linkage, improves outcomes. A growing concern in the literature is that screening without adequate referral infrastructure may actually cause harm by raising expectations that cannot be met.
Ethical Considerations
Screening without the capacity to address identified needs can erode patient trust and cause frustration. Patients may fear disclosing social needs due to concerns about immigration status, involvement of child protective services, or stigma. Practices must ensure confidentiality and clearly explain how the information will be used. Cultural humility is essential, as SDOH experiences vary significantly across cultural contexts. Clinicians should avoid paternalistic assumptions about what patients need or want.
Billing and Reimbursement
ICD-10 Z-codes allow documentation of SDOH conditions but do not themselves generate revenue. CMS Chronic Care Management (CCM) and Transitional Care Management (TCM) billing codes can incorporate SDOH-related work. Community health worker services are increasingly reimbursable through Medicaid waivers. Value-based care models create financial incentives for SDOH screening through quality metrics tied to outcomes rather than volume.
<image>A circular diagram illustrating the five SDOH domains (economic stability, education, healthcare access, neighborhood/built environment, social/community context) surrounding a central figure representing a patient. Each domain includes 3-4 specific examples and shows bidirectional arrows indicating how each domain influences health outcomes. Include data callouts showing the percentage contribution of each domain to overall health outcomes.</image>
<image>A clinical workflow diagram showing the step-by-step process of SDOH screening implementation in a primary care practice. Start with patient check-in (screening administration), move through scoring and EHR integration, positive screen flagging, clinician discussion, warm handoff to community health worker, resource navigation, closed-loop referral tracking, and follow-up. Use a horizontal process flow with role assignments (front desk, MA, clinician, CHW) indicated at each step.</image>
<image>A heat map of the United States showing geographic variation in key SDOH indicators (food insecurity rates, uninsurance rates, transportation barriers) overlaid with health outcome data (life expectancy, chronic disease prevalence). Use color gradients to show the correlation between SDOH burden and health outcomes at the county level, with callout boxes highlighting specific examples of high-burden communities.</image>
Clinical Pearls
The Hunger Vital Sign, a simple two-item screen, is one of the most efficient and well-validated SDOH screening tools and deserves consideration as a routine vital sign for all patients. Universal screening is preferable to targeted approaches because it avoids the implicit bias of screening based on appearance, insurance type, or demographics. A positive SDOH screen should trigger a warm handoff to a navigator or community health worker, not just a printed list of phone numbers. Using Z-codes to document SDOH findings (Z59 for housing, Z56 for employment, Z60 for social environment) strengthens population health data and may support future reimbursement models. Practices should build referral networks before implementing screening programs, as screening without adequate referral capacity risks patient harm and trust erosion. Social isolation in elderly patients carries health risks comparable to many chronic diseases and should be assessed at wellness visits. Intimate partner violence screening must be conducted privately, never in the presence of a partner or family member. Community health workers represent one of the highest-yield investments for addressing SDOH in primary care settings.
References
- Healthy People 2030 SDOH Framework (HHS)
- NASEM Report: Integrating Social Care into the Delivery of Health Care (2019)
- CMS Accountable Health Communities Model Evaluation Reports
- PRAPARE Implementation and Action Toolkit (NACHC)
- Garg A et al. Addressing the social determinants of health within the patient-centered medical home. JAMA 2012
- Gottlieb LM et al. Effects of social needs screening and in-person service navigation on child health. JAMA Pediatr 2016
- Berkowitz SA et al. Food insecurity and metabolic control among US adults with diabetes. Diabetes Care 2018
