A few hundred thousand Americans occupy a unique and extraordinarily complex position in American healthcare. 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 coordination crisis isn’t that expansion duals face requirements. The coordination crisis is that nobody has designed systems acknowledging their existence.
The synthesis across MRWR-6A and MRWR-6B reveals 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. Success requires precision about population size, investment scaled to actual scope, and coordination quality exceeding anything existing Medicaid administrative processes currently achieve.
The Population 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 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).
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. The misperception that work requirements affect all dual eligibles drives inflated cost estimates, implementation timelines assuming universal D-SNP system overhauls, and advocacy messaging that obscures rather than clarifies actual exposure.
The Documentation Paradox#
Expansion duals already have federal disability determinations. The Social Security Administration evaluated their medical evidence, applied stringent standards, and concluded they meet criteria for disability benefits qualifying for Medicare. This determination process averaged 243 days for ALJ decisions in 2023, involved comprehensive medical documentation, and applied standards rigorous enough that approximately 60 percent of initial applications are denied. Expansion duals cleared this bar.
Work requirements create the documentation paradox: people with federal disability determinations must prove disability again to maintain Medicaid coverage they held continuously throughout their disability determination process. The policy requires documenting to state Medicaid agencies what has already been documented to federal Social Security Administration. The burden varies by orders of magnitude based on state policy choices.
States accepting Medicare disability determinations as automatic proof of work requirement exemption create minimal burden. States requiring separate medical evidence from treating physicians impose substantial additional documentation requirements. States allowing D-SNP care coordinators to document medical frailty based on clinical knowledge streamline processes. States requiring formal evaluations by state-contracted assessors create bottlenecks and delays.
The efficiency implications are profound. Automatic Medicare-based exemption affects perhaps 300,000-600,000 expansion duals nationally through simple data matching across existing federal systems. Manual state review processes create 300,000-600,000 individual medical evaluations duplicating work already completed at federal level. The cost differential runs from $10-15 million for automated data matching to $150-300 million for manual state reviews. Implementation timeline differences range from 3-6 months for automated approaches to 18-36 months for manual processes.
D-SNP Operational Transformation Requirements#
Most D-SNPs serve traditional duals with minimal work requirement exposure and require limited operational changes. But plans serving younger disabled populations in expansion states face genuine transformation challenges requiring population segmentation that doesn’t currently exist, care coordination capabilities fundamentally different from existing models, technology infrastructure requiring substantial investment, and state engagement patterns foreign to most plan operations.
MRWR-6B establishes the operational framework across six dimensions. First, risk stratification systems must identify which enrolled dual eligibles entered through expansion pathways versus traditional disability or age pathways. This requires data integration connecting Medicare eligibility files, Medicaid enrollment systems, SSA disability databases, and care management platforms. The infrastructure doesn’t exist. Building it costs $1-2 million per 100,000 dual members and requires 3-6 months minimum.
Second, care coordinator training must add Medicaid eligibility expertise, work requirement exemption knowledge, disability documentation standards, and verification process navigation to existing clinical coordination skills. Training investment reaches $500,000-1 million per 100-person team including curriculum development, delivery, and ongoing education. But training is insufficient without time allocation. Exemption support requires 15-20 hours per member for intensive cases, representing 30,000-40,000 annual hours beyond standard workload for a D-SNP with 2,000 expansion duals needing support.
Third, technology platforms must enable exemption application submission, state processing status tracking, automated follow-up for incomplete applications, and integration with provider attestation systems. Development or procurement costs $3-5 million with 6-12 month deployment timelines. Fourth, provider engagement infrastructure must facilitate efficient medical documentation, template standardization, EHR integration, and education about state-specific requirements. Investment reaches $300,000-500,000 for sustainable engagement models.
Fifth, state relationship building requires sustained engagement on policy development, verification standards, documentation requirements, delegation authority, and appeals processes. This engagement pattern differs substantially from standard state-plan relationships focused on contract compliance and quality reporting. Sixth, measurement systems must track exemption application success rates, verification failure patterns, coverage loss causes, appeal outcomes, and member experience metrics. Without rigorous measurement, plans cannot distinguish system failures from member non-compliance or identify operational improvements.
The total implementation cost for D-SNPs serving 100,000 dual members totals $4.8-8.5 million one-time investment plus $5.9-8 million annual ongoing costs. For large national plans, costs scale substantially. Centene with 2 million dual eligibles faces $96-170 million one-time investment. UnitedHealthcare with 1.5 million duals needs $72-128 million. Humana with 800,000 duals requires $38-68 million. Industry total exceeds $500 million for D-SNP implementation, all to serve perhaps 300,000-600,000 expansion duals requiring intensive support.
The Coordination Failures Nobody Planned For#
Expansion duals require coordination across five organizational types that rarely interact seamlessly: D-SNPs providing integrated care coordination, state Medicaid agencies processing work requirement exemptions, Social Security Administration maintaining disability determination records, Medicare Administrative Contractors managing Medicare enrollment, and healthcare providers documenting medical conditions supporting exemptions.
Each organization operates under different authorities, timelines, data systems, privacy rules, and performance incentives. D-SNPs measure success by member retention and care continuity. State Medicaid agencies measure success by eligibility accuracy and fraud prevention. SSA measures success by disability determination quality without considering Medicaid implications. MACs measure success by Medicare enrollment processing without Medicaid coordination. Providers measure success by clinical outcomes without considering eligibility documentation needs.
These misaligned incentives create predictable coordination failures. D-SNPs submit exemption applications to states on members’ behalf only to learn states don’t accept third-party submissions. States request current medical documentation from providers who completed extensive documentation for initial disability determination two years prior and see no clinical reason for additional paperwork. SSA disability determination files exist in federal databases inaccessible to state Medicaid systems requiring manual verification. Medicare enrollment showing disability-based qualification doesn’t automatically transfer to Medicaid exemption processing.
The coordination quality required exceeds anything existing Medicaid administrative processes currently achieve. Redetermination processes involve coordination between members and state eligibility systems. Work verification involves coordination between members, employers, and states. Exemption processing involves coordination between members, providers, and states. But expansion dual work requirement exemption requires coordination between members, D-SNPs, states, SSA, Medicare systems, and providers simultaneously.
The infrastructure enabling this coordination doesn’t exist. The relationships aren’t established. The communication protocols aren’t defined. Data sharing agreements aren’t negotiated. Technology integration isn’t built. Ten months separate analysis in February 2026 from December 2026 implementation. The gap between what needs to exist and current reality is extraordinary.
State Policy Uncertainty and System Design Impossibility#
D-SNPs cannot build verification systems without knowing what states will require. Will Medicare disability determinations automatically qualify for exemption or require separate state review? Will plans be authorized to submit exemption applications on members’ behalf or only facilitate member-submitted applications? What documentation standards will states require? How will appeals processes function when members are denied exemptions despite federal disability determinations?
These questions affect system design fundamentally. A system built for automatic Medicare-based exemption looks completely different from a system built for manual state medical review. Technology enabling plan-submitted applications differs substantially from technology facilitating member-initiated applications. Yet most states haven’t answered these questions. D-SNPs must build flexible systems accommodating multiple policy scenarios, then configure specific workflows once state rules crystallize.
This uncertainty increases development complexity and cost substantially. Building systems with configuration flexibility rather than hard-coded assumptions adds 30-50 percent to development costs and timelines. Plans face the dilemma of waiting for state policy clarity, which guarantees insufficient implementation time, or building flexible systems despite uncertainty, which increases cost and complexity. Both options are suboptimal. The policy timeline created the impossible choice.
Star Rating Distortions and Perverse Incentives#
D-SNP Star Ratings measure quality across clinical outcomes, member experience, and process measures. Plans serving traditional duals face relatively stable populations with predictable utilization patterns. Plans serving expansion duals face members cycling on and off coverage based on documentation failures, creating utilization disruptions unrelated to plan quality.
A member loses Medicaid due to verification failure, disenrolls from the D-SNP, interrupts care, has condition deteriorate, then re-enrolls with worse health status. Star Ratings capture the deterioration and member experience disruption but attribute it to plan performance rather than policy-induced churn. Plans serving high proportions of expansion duals will show worse quality measures not because of care quality but because of population exposure to work requirement documentation complexity.
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 beyond plan control.
Bottom Line#
The coordination crisis for expansion duals reflects the collision of multiple complex systems converging on a small population nobody designed coordination mechanisms to serve. Success requires accurate population identification preventing both under-preparation and resource misallocation, state policy choices minimizing redundant documentation burden on people who already cleared federal disability determination, D-SNP investment in identification systems and care coordination capabilities scaled to actual exposure, and measurement distinguishing system failures from member non-compliance.
The operational challenge is real but manageable with precision about who faces requirements, investment proportionate to population size, coordination quality exceeding existing administrative processes, and sustained engagement across organizations that rarely collaborate seamlessly. The organizations that will navigate this successfully will start now, invest substantially, collaborate actively, measure rigorously, and adapt continuously based on evidence. Those that will struggle will wait passively, minimize investment, operate independently, assume traditional approaches suffice, and hope complexity resolves itself.
For expansion duals, the difference between these approaches determines whether integrated care survives work requirement implementation or becomes another casualty of policy complexity affecting the population that needs coordination most. The next ten months determine which outcome occurs.