SDOH stands for social determinants of health, a term used across medicine and public health to describe the nonmedical factors that shape how healthy you are. These are the conditions in which people are born, grow, work, live, and age, including economic stability, neighborhood safety, education level, and access to nutritious food. The concept matters because medical care accounts for only an estimated 10 to 20 percent of what determines health outcomes for a population. The remaining 80 to 90 percent comes from these broader social, economic, and environmental factors.
The Five Core Domains
The U.S. Department of Health and Human Services organizes SDOH into five domains through its Healthy People 2030 framework. These categories help healthcare systems, researchers, and policymakers identify where nonmedical forces are helping or harming health.
- Economic stability: Income, employment status, poverty, food security, and housing affordability. Someone working an unstable hourly job, for example, may skip medical appointments or delay filling prescriptions because they can’t afford to miss a shift.
- Education access and quality: Level of schooling, literacy, language barriers, and the ability to find and understand health information. Lower educational attainment is consistently linked to higher rates of chronic disease.
- Healthcare access and quality: Whether you have insurance, live near a provider, can get an appointment in a reasonable timeframe, and can communicate effectively with your care team.
- Neighborhood and built environment: Housing quality, access to transportation, availability of grocery stores with fresh food, neighborhood safety, clean water, and exposure to environmental hazards. People without reliable transportation often struggle to reach medical appointments, pharmacies, or even jobs that provide insurance.
- Social and community context: Social support networks, community engagement, experiences of discrimination, and exposure to violence or trauma. Social isolation and stress from these factors directly affect both mental and physical health.
These domains overlap constantly. A person living in poverty (economic stability) in a neighborhood without a grocery store (built environment) who didn’t finish high school (education) faces compounding disadvantages that no single medical intervention can fix. That’s the central insight behind SDOH: simply telling people to make healthier choices doesn’t work when their environment makes healthy choices difficult or impossible.
Why Your Doctor’s Office Asks About Housing and Food
If you’ve been asked at a clinic whether you feel safe at home, whether you’ve worried about running out of food, or whether you have trouble paying for medications, you’ve been screened for social determinants. One widely used tool called PRAPARE covers 22 factors including housing stability, transportation needs, employment, stress, domestic violence, childcare, utilities, and income level. These aren’t casual conversation starters. The answers help your care team understand barriers that could undermine any treatment plan they create.
A patient prescribed a medication that requires refrigeration, for instance, faces a real problem if their housing has unreliable utilities. Someone told to eat a low-sodium diet may not have access to a grocery store that sells fresh produce. Screening for these factors lets providers connect patients with community resources like food assistance programs, housing support, or transportation services rather than simply repeating medical advice the patient already knows but can’t act on.
How SDOH Appears in Medical Records
Social determinants aren’t just discussed informally. They’re formally documented in medical records using a specific set of diagnosis codes (ICD-10-CM categories Z55 through Z65). These codes let clinicians record nonmedical factors affecting a patient’s health in the same structured way they’d document diabetes or high blood pressure.
The coding system is surprisingly detailed. Homelessness, for example, can be coded as sheltered or unsheltered. Housing instability has its own codes distinguishing between someone currently housed but at risk of homelessness and someone who experienced homelessness in the past 12 months. Food insecurity, transportation insecurity, financial insecurity, inadequate drinking water, problems related to education and literacy, and occupational hazard exposure all have dedicated codes. Many of these were added or expanded as recently as 2021, 2022, and 2023, reflecting how quickly the medical system is formalizing its attention to these factors.
When these codes appear in your chart, they serve several purposes. They alert other providers on your care team to challenges you’re facing. They help health systems track patterns across patient populations. And they support efforts to connect you with social services, since a documented need is easier to act on than an undocumented one.
The Gap Between Clinical Care and Health
The reason SDOH has become such a prominent term in healthcare is a simple, striking statistic: genetics and clinical care combined contribute less to your overall health than your daily living conditions do. People without access to grocery stores carrying healthy food have higher rates of heart disease, diabetes, and obesity, and lower life expectancy than people who do have that access. That gap can’t be closed by a doctor’s visit alone.
This doesn’t mean medical care is unimportant. It means that healthcare systems are increasingly recognizing they need to look beyond the exam room. Hospitals now partner with housing agencies. Clinics employ community health workers who help patients navigate benefits and social services. Health plans track food insecurity and transportation barriers as part of quality metrics. The term SDOH, in practical terms, represents a shift in how medicine defines its own responsibility: not just treating disease, but addressing the conditions that cause it.