In this guide 6 sections
A cardiologist prescribes a medication that will meaningfully extend a man's life. He fills it once. The following month he doesn't, because the copay competes with the electricity bill and the electricity bill wins.
Nothing went wrong medically. The diagnosis was right, the drug was right, the dose was right. The plan failed anyway, in a domain the medical record has no field for.
This is what people mean by social determinants of health, and for older adults they are not a soft consideration alongside the clinical ones. They are frequently the deciding factor.
The five domains that matter most
Medicare's own screening tools focus on a core set — the barriers that most reliably interrupt care:
Health-related social needs and what they actually break
Transportation
- What it looks like
- No car, no licence, no driver, transit that a walker can't manage
- What it breaks
- Every appointment, every test, every pharmacy trip
Food
- What it looks like
- Insecurity, or inability to follow a prescribed diet
- What it breaks
- Diabetes control, heart failure management, wound healing, medication tolerance
Housing
- What it looks like
- Instability, unsafe conditions, stairs, no accessible bathroom
- What it breaks
- Discharge planning, falls risk, ability to stay home at all
Utilities
- What it looks like
- Heat, cooling or electricity at risk of shutoff
- What it breaks
- Refrigerated medications, oxygen concentrators, temperature-sensitive conditions
Safety and connection
- What it looks like
- Interpersonal violence, isolation, no one to call
- What it breaks
- Mental health, adherence, early detection of anything going wrong
| Domain | What it looks like | What it breaks |
|---|---|---|
| Transportation | No car, no licence, no driver, transit that a walker can't manage | Every appointment, every test, every pharmacy trip |
| Food | Insecurity, or inability to follow a prescribed diet | Diabetes control, heart failure management, wound healing, medication tolerance |
| Housing | Instability, unsafe conditions, stairs, no accessible bathroom | Discharge planning, falls risk, ability to stay home at all |
| Utilities | Heat, cooling or electricity at risk of shutoff | Refrigerated medications, oxygen concentrators, temperature-sensitive conditions |
| Safety and connection | Interpersonal violence, isolation, no one to call | Mental health, adherence, early detection of anything going wrong |
Two more sit behind all of these: money, and the sheer administrative burden of being a patient — the applications, appeals and forms that stand between a person and the help they're entitled to.
How big the effect actually is
The scale of these barriers among Medicare beneficiaries is not marginal. CMS data from 2022 found that 17% of community-dwelling beneficiaries experienced food insecurity and 14% reported difficulty getting places — with the transportation figure rising among those 85 and older, precisely the group with the most appointments to reach.
Loneliness deserves its own mention, because it's the one people dismiss. The public health evidence treats social isolation as a mortality risk factor comparable in magnitude to well-established medical ones, and links it to higher rates of dementia, heart disease and stroke. It is not a quality-of-life footnote; it's a clinical variable.
“You need to see a cardiologist next week. — I don't have a car.”— Where a great deal of American medicine quietly stops
The experiment that changed the rules
For years the response to all this was that it wasn't medicine's job. Then CMS tested it properly.
The Accountable Health Communities Model screened more than 1.1 million Medicare and Medicaid beneficiaries for food insecurity, housing instability, transportation problems, utility needs and interpersonal violence, then connected those who screened positive with help. The final evaluation found roughly $219.6 million in net savings after accounting for the full cost of the intervention — driven largely by fewer avoidable emergency visits and preventable readmissions.
That result is the direct ancestor of what Medicare covers today. Policy is supposed to work like this and rarely does: identify the problem, test the fix, measure it, fold what works into the programme.
What Medicare now pays for
Three things, all introduced in the 2024 Physician Fee Schedule:
- 1.A structured conversation about these barriers during a covered visit — most naturally the annual wellness visit, which already asks about them. Until 2026 there was a dedicated risk-assessment code for this; CMS has since repurposed it, so the screening now happens inside the visit rather than as a service billed alongside it.
- 2.Community Health Integration (G0019, G0022) — ongoing monthly help addressing the barriers found, delivered by community health workers or navigators under a treating practitioner.
- 3.Principal Illness Navigation (G0023, G0024) — for serious illness, and explicitly including connecting patients to community resources when practical barriers interfere with treatment.
What can actually be done about each one
The reason navigation works is that nearly every one of these barriers already has a programme attached to it. The programmes are simply scattered across agencies that don't talk to each other, with applications that assume energy the applicant doesn't have.
The help that already exists
Transportation
- What's usually available
- Medicaid non-emergency medical transportation for those eligible; Area Agency on Aging ride programmes; some Medicare Advantage plans include rides; hospital and disease-foundation transport programmes
Food
- What's usually available
- SNAP; Meals on Wheels; congregate meal sites; food pantries; medically tailored meal programmes; some Advantage plans include grocery allowances
Housing
- What's usually available
- HUD Section 202 senior housing; home modification and repair grants; Area Agency on Aging housing counselors; weatherisation programmes
Utilities
- What's usually available
- LIHEAP energy assistance; state medical-baseline protections against shutoff for people with medical equipment; utility hardship funds
Medication cost
- What's usually available
- Extra Help for Part D; manufacturer assistance programmes; state pharmaceutical assistance programmes; the Part D out-of-pocket cap and monthly payment option
Isolation
- What's usually available
- Senior centres; Area Agency on Aging friendly-visitor and phone-check programmes; faith and community groups; volunteer driver schemes that double as company
| Barrier | What's usually available |
|---|---|
| Transportation | Medicaid non-emergency medical transportation for those eligible; Area Agency on Aging ride programmes; some Medicare Advantage plans include rides; hospital and disease-foundation transport programmes |
| Food | SNAP; Meals on Wheels; congregate meal sites; food pantries; medically tailored meal programmes; some Advantage plans include grocery allowances |
| Housing | HUD Section 202 senior housing; home modification and repair grants; Area Agency on Aging housing counselors; weatherisation programmes |
| Utilities | LIHEAP energy assistance; state medical-baseline protections against shutoff for people with medical equipment; utility hardship funds |
| Medication cost | Extra Help for Part D; manufacturer assistance programmes; state pharmaceutical assistance programmes; the Part D out-of-pocket cap and monthly payment option |
| Isolation | Senior centres; Area Agency on Aging friendly-visitor and phone-check programmes; faith and community groups; volunteer driver schemes that double as company |
The single most useful phone number for most of this is the Eldercare Locator, 1-800-677-1116, which routes to the local Area Agency on Aging — the front door to most of the left-hand column.
Why this needs a person, not a pamphlet
Screening for these needs without doing anything about them is worse than not screening, and it's a genuine failure mode: a clinic identifies food insecurity, hands over a printed list of pantries, and records the box as ticked.
The gap between a referral and a resolution is where all the difficulty lives. Someone has to make the call during opening hours, complete the application, notice it was denied for a missing document, appeal it, and confirm the ride actually arrives on the morning of the appointment. That is a job. It's the job CHI pays for.
That's the entire argument for treating this as medicine. The prescription was always correct. What was missing was the conditions under which a person could take it.
Questions families ask
What are social determinants of health?
The non-medical conditions that shape health outcomes — where someone lives, what they can eat, whether they can get to appointments, whether utilities stay on, whether they're safe and connected to other people. In older adults they frequently determine whether a treatment plan can be followed at all. Medicare increasingly uses the term "health-related social needs" for the individual-level version.
Does Medicare pay to address social needs?
Yes, since 2024. Medicare covers Community Health Integration services (G0019, G0022) that address these barriers — ongoing monthly help from community health workers or navigators under a treating practitioner, starting from a qualifying visit where the practitioner identifies the problem. Principal Illness Navigation also includes connecting patients to community resources.
Will Medicare buy my parent food or pay their rent?
No — Medicare pays for the professional help that connects someone to the programmes that do. A CHI navigator files the SNAP application, arranges Meals on Wheels, sorts out energy assistance and books the rides. The food and the utility help come from those programmes; Medicare covers the person who makes them actually happen.
How does a doctor find out about these barriers?
Usually through a screening questionnaire, often at the annual wellness visit, and Medicare covers a standalone social needs risk assessment for this. But screening only works if someone asks plainly and the patient feels able to answer honestly — which is why families raising it directly is often faster than waiting to be asked.
Is loneliness really a medical issue?
The public health evidence treats social isolation as a mortality risk comparable to established medical risk factors, and associates it with higher rates of dementia, heart disease and stroke. It also directly undermines treatment: someone with no one to notice they've stopped eating or taking medication loses the informal monitoring most people take for granted.
Who can help us work through all of this?
Start with the Eldercare Locator at 1-800-677-1116, which connects you to the local Area Agency on Aging — the front door to rides, meals, home help and benefits screening. If the barriers are persistent and tangled, ask your parent's doctor about Community Health Integration, which is Medicare's way of paying someone to work the whole list rather than hand you a list.
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