A few hundred thousand Americans occupy a unique and extraordinarily complex position in the healthcare system. They entered Medicaid through expansion based solely on income, then later qualified for Medicare through disability determination. These “expansion duals” face Medicare disability adjudication, Medicaid work requirements, exemption documentation, and integrated care coordination converging in ways that haven’t existed before.
The two articles in this series establish that expansion duals represent perhaps 2-4 percent of all dual eligibles but face exponentially more complex documentation requirements than either single-coverage expansion adults or traditional dual eligibles. For Dual Eligible Special Needs Plans serving this population, work requirements create unprecedented operational challenges requiring identification systems that don’t exist, care coordination infrastructure that must be built, and state negotiation on policies that remain undefined. The coordination crisis isn’t that expansion duals face requirements. The coordination crisis is that nobody has designed systems acknowledging their existence.
The Population That Policy Forgot#
Traditional dual eligibles, approximately 13.7 million Americans receiving both Medicare and Medicaid, face minimal work requirement exposure. Most entered Medicaid through disability pathways providing automatic exemption, or are over age 60 receiving age-based protection. The 5.2 million receiving Supplemental Security Income have federal disability determinations precluding work requirements. Most others qualified for Medicare at 65 and Medicaid through aged pathways similarly exempt.
Expansion duals exist only because someone under 65 without traditional Medicaid eligibility qualified for expansion coverage based on income, maintained that coverage for several years, then developed or had pre-existing conditions worsen to the point of qualifying for Social Security Disability Insurance and subsequently Medicare. This pathway exists only in states that adopted expansion and only for people who became disabled after expansion enrollment. The resulting population numbers in the few hundred thousand nationally, concentrated in seven states that probably contain 60-70 percent of all expansion duals: California (40,000-70,000), New York (35,000-60,000), Pennsylvania, Ohio, Illinois, Washington, and Michigan (15,000-35,000 each).
MRWR-6A establishes that these numbers matter enormously for calibrating policy responses. Treating expansion duals as if they represent the entire 13.7 million dual eligible population creates panic about unworkable administrative burden. Recognizing that expansion duals are a small, geographically concentrated subset enables targeted responses scaled appropriately to actual scope. California building comprehensive support systems for 40,000-70,000 people is entirely different from California attempting to administer work requirements for millions.
But the small population size does not diminish complexity. Expansion duals face work requirement exposure precisely because they entered through income pathways where requirements apply, not through disability or age pathways with built-in exemptions. Their current disability may warrant exemption, but they must document it rather than receiving automatic protection. This creates the bizarre situation where someone whose disability qualified them for Medicare must separately prove that same disability exempts them from Medicaid work requirements unless their state implements automatic recognition policies.
The Integration Model Matters#
MRWR-6A’s taxonomy of D-SNP integration types reveals that work requirement impact varies dramatically based on contract structure. Coordination-only D-SNPs serving 60.6 percent of dual eligible plan enrollment can separate Medicare operations from Medicaid volatility relatively easily since contracts were always separate. Highly Integrated D-SNPs serving 29.8 percent face more disruption when Medicaid terminates because care models assume both revenue streams, but most HIDE SNPs serve traditional duals with minimal exposure.
Fully Integrated D-SNPs represent only 8 percent of dual eligible plan enrollment but face the most severe consequences. FIDE SNPs must cover comprehensive long-term services and supports, behavioral health, and home health with exclusively aligned enrollment. Members cannot enroll in the FIDE SNP without the aligned Medicaid plan. When work requirements terminate Medicaid coverage, FIDE SNP members must disenroll from Medicare coverage as well. The care model collapses entirely rather than degrading partially.
Reading MRWR-6A and MRWR-6B together reveals that integration type determines not just business model disruption but care coordination capacity. FIDE SNPs have the most sophisticated care coordination infrastructure, the deepest clinical knowledge of member needs, and the strongest relationships enabling support. But they also face the highest stakes from coverage loss because their entire model depends on aligned coverage. This creates perverse incentives where plans best positioned to help members navigate work requirements face the most severe consequences from failing to do so successfully.
The care coordination infrastructure detailed in MRWR-6B provides exactly what expansion duals need for exemption documentation: medical records documenting disabling conditions, care coordinators understanding functional capacity, provider relationships enabling attestation, and clinical expertise supporting medical frailty determination. But these assets become vulnerabilities when coverage loss terminates the plan relationship. The D-SNP that invested substantially in member support loses both the member and the revenue supporting that investment when verification systems fail.
State Policy Choices Create Binary Outcomes#
MRWR-6A identifies the fundamental state policy choice: do existing federal disability determinations suffice for Medicaid work requirement exemption, or do states require separate determinations despite Medicare eligibility? This single decision creates radically different experiences for expansion duals and radically different operational burden for D-SNPs.
States implementing automatic exemptions based on Medicare disability create minimal burden. Someone qualified for Medicare based on disability receives Medicaid work requirement exemption automatically through data integration. D-SNPs can identify these members through Medicare enrollment files, flag them as exempt in care coordination systems, and proceed with integrated care. Administrative burden is negligible, coverage stability is high, and the bizarre redundancy of proving the same disability twice is avoided.
States requiring separate determinations despite Medicare disability impose substantial burden. The individual must apply for exemption, submit current medical evidence, undergo state evaluation of functional capacity, and receive exemption approval. This creates redundant evaluation despite existing federal disability determination. D-SNPs must facilitate exemption applications, gather medical documentation, coordinate provider attestation, and monitor exemption approval processes for potentially thousands of members. The administrative machinery is complex and the stakes are coverage loss if any step fails.
California, New York, and Washington will likely implement automatic exemptions. Their Medicaid programs emphasize access and beneficiary protection, they will respect prior federal adjudications, and they will minimize redundant evaluations. Texas, Florida, and Georgia will likely require stringent separate determinations. Their Medicaid history reflects priorities emphasizing program integrity over administrative efficiency. Ohio, Pennsylvania, and Michigan represent uncertain territory where decisions remain unclear.
These state choices matter not just for administrative burden but for coverage outcomes. In states with automatic exemptions, expansion duals maintain coverage through simple data integration. In states requiring separate determinations, coverage depends on navigating exemption documentation processes that many people with serious mental illness, cognitive disabilities, or complex medical needs cannot manage independently. The difference between approaches could easily be 10-20 percentage points in coverage maintenance rates.
The Four-Category Risk Stratification Framework#
MRWR-6B’s operational framework requires D-SNPs to segment enrolled duals into actionable categories: traditional duals over 65 or receiving SSI (no exposure, standard care coordination proceeds), expansion duals with Medicare disability determination (likely exempt through medical frailty but requires verification with state), expansion duals under 65 without clear disability basis for Medicare eligibility (potentially subject to work requirements unless other exemptions apply), and partial benefit duals in Medicare Savings Programs only (ambiguous whether work requirements apply).
This segmentation reveals the data integration challenge that most D-SNPs have not solved. Medicare eligibility files show whether someone qualified based on age or disability but not whether they receive SSI. Medicaid eligibility files show entry pathway but not current exemption status. Identifying expansion duals requires matching Medicare disability flags with Medicaid expansion enrollment pathways across systems that were never designed to communicate.
The scenario analysis in MRWR-6B demonstrates what functional support looks like when infrastructure exists. Member John works full-time, D-SNP contacts his employer establishing automated monthly reporting, payroll system transmits hours worked directly to D-SNP verification portal, D-SNP bundles his data with other employees at same store and submits consolidated verification to state system. Coverage continues smoothly without monthly action from John. Member Susan loses her job, automated verification system detects failed employer transmission, care coordinator reaches out immediately, assessment reveals job search and caregiving activities, appropriate exemptions are documented, coverage maintains continuity despite employment change.
But these scenarios assume technical infrastructure, trained staff, employer cooperation, and state data exchange protocols that do not exist in most markets. Building this infrastructure for expansion duals dispersed across D-SNP portfolios requires identifying affected members (difficult without integrated data), stratifying support needs (requiring clinical assessment), training care coordinators (adding competency to already stretched staff), building technology platforms (costly for small populations), and negotiating state integration points (requiring relationships that may not exist).
Star Ratings and Quality Measurement Distortions#
MRWR-6A surfaces a quality measurement problem that MRWR-6B cannot solve operationally. Medicare Advantage Star Ratings, which determine quality bonus payments worth millions to plans annually, measure member retention, continuity of care, and medication adherence. Work requirements create coverage disruptions independent of plan quality that degrade these metrics.
Traditional D-SNPs serving expansion dual populations may see Star Rating declines when work requirement verification failures cause coverage losses. The plan provided excellent care, but the member could not navigate state verification systems or employer documentation requirements. Star Ratings decline, quality bonus payments decrease, and the plan’s competitive position weakens. Plans serving higher proportions of expansion duals face systematic disadvantage in quality measurement compared to plans serving traditional duals with automatic exemptions.
This creates perverse incentives for risk selection. D-SNPs concerned about Star Rating protection might avoid marketing to expansion duals, limit enrollment in areas with high expansion dual concentration, or reduce services making the plan less attractive to expansion adults likely to later become expansion duals. The policy intended to promote responsibility could reduce quality measurement validity and create incentives for plans to avoid serving the most vulnerable dual eligible population.
CMS faces choices about whether to create separate quality reporting for D-SNPs serving high proportions of expansion duals, acknowledging different operating environments, or apply uniform standards potentially driving plans to avoid expansion duals to protect scores. Neither option is satisfactory. Separate standards reduce comparability across plans. Uniform standards create inequitable measurement. But maintaining the status quo guarantees Star Rating distortions that misattribute plan quality based on member population characteristics.
Implementation Timeline Reality#
Ten months separated analysis in MRWR-6A from December 2026 implementation. D-SNPs serving expansion dual populations must identify affected members, stratify support needs, train care coordinators, build technology infrastructure, and negotiate state integration points within this compressed timeframe. Most D-SNPs have not started these processes because state policies determining exemption architecture remain undefined.
MRWR-6B details the coordination infrastructure required: risk stratification systems identifying Category Two and Category Three members, care coordinator training modules on Medicaid eligibility and work requirements, data integration enabling automatic verification or exemption identification, employer partnership protocols for members who work, and exemption documentation workflows for members qualifying for medical frailty. Each component requires months to build and test. The timeline assumes states have finalized policies so plans know what systems to build.
But state policy uncertainty persists. Will Medicare disability determinations suffice for exemption or require separate state review? Will D-SNPs be authorized to submit exemption applications on members’ behalf or merely facilitate member-submitted applications? What documentation standards will states require? How will appeals processes function when members are denied exemptions? These questions affect system design fundamentally, and most states have not answered them.
The gap between what needs to be built and the time available to build it suggests that early implementation will feature substantial coverage losses from system failures rather than actual non-compliance with work requirements. Someone who should receive automatic exemption based on Medicare disability will lose coverage because data integration wasn’t completed. Someone whose employer would verify hours will lose coverage because the employer portal wasn’t ready. Someone whose D-SNP care coordinator could document medical frailty will lose coverage because state exemption processing systems were overwhelmed.
The Multiply-Burdened Reality#
Reading both articles together surfaces that expansion duals represent the multiply-burdened population examined throughout Series 11 in concentrated form. They entered Medicaid through expansion because of low income. They developed or had disabilities worsen to SSDI qualification levels. They navigate Medicare benefits while maintaining Medicaid eligibility. They face semi-annual redetermination while traditional duals face annual cycles. They must coordinate care across Medicare and Medicaid systems. Now they must also navigate work requirement verification or exemption documentation.
Each burden compounds the others. The serious mental illness that qualified someone for Medicare disability creates documentation barriers for Medicaid exemption processes. The cognitive impairment affecting functional capacity also affects ability to understand requirement notices and respond appropriately. The multiple chronic conditions requiring intensive care coordination leave little capacity for administrative navigation. The low income that qualified someone for expansion means they lack resources to solve problems that money could address.
MRWR-6B’s operational scenarios demonstrate that successful support requires treating multiple barriers as compounding rather than additive. Someone with diabetes needs transportation to appointments. Someone with serious mental illness needs reminder calls and navigation assistance. Someone recently homeless needs address stability for correspondence. Someone with limited English proficiency needs materials in threshold languages. The expansion dual with diabetes, mental illness, recent homelessness, and limited English proficiency needs all of these supports simultaneously and coordinated rather than as separate program siloes.
D-SNPs theoretically provide this coordinated support through integrated care models. But integrated care works when enrollment is stable and care coordinators can build relationships over time. Work requirements create enrollment volatility that breaks continuity, requires constant member identification and stratification, and forces care coordinators to focus on eligibility maintenance rather than clinical support. The multiply-burdened population that integrated care was designed to serve becomes harder to serve effectively precisely because work requirements add administrative complexity to already challenged systems.
What Remains Unresolved#
Will states respect federal disability determinations for Medicaid exemption purposes, or require redundant state processes? This single decision determines whether expansion duals face minimal exemption burden or substantial documentation requirements. The difference in coverage outcomes could easily be 10-20 percentage points.
Can D-SNPs obtain delegated authority to submit exemptions and verifications on members’ behalf, or will state systems require member-submitted applications even when care coordinators have superior information and relationships? The delegation architecture examined in MRWR-7D remains undefined in most states.
How will quality measurement systems account for coverage disruptions independent of plan quality? Will CMS develop Star Rating adjustments for plans serving expansion dual populations, or will measurement distortions create risk selection incentives?
What happens to FIDE SNP members who lose Medicaid coverage and must disenroll from Medicare coverage simultaneously? Is there transition support maintaining some level of care coordination during coverage gaps, or does integrated care collapse entirely?
Most fundamentally, will anyone build the systems expansion duals need before December 2026? States must finalize exemption policies. D-SNPs must build identification and support infrastructure. Data integration must connect Medicare, Medicaid, and exemption systems. Provider payment structures must support attestation. This coordination across multiple entities with no single party responsible for outcomes suggests that gaps will emerge from lack of coordination rather than from any single entity’s failure.
The few hundred thousand expansion duals may be small in number, but they face more system complexity than virtually any other population. Getting implementation right requires accuracy about population size, precision about who faces exposure, and proportionate response scaled to actual rather than imagined scope. The analysis in this series suggests that understanding is emerging, but infrastructure is not.