Medicare Advantage Home Visit Fraud: When an Assessment Exists to Capture Diagnoses

Medicare Advantage home visit fraud occurs when a plan or assessment vendor knowingly uses unsupported diagnoses from home visits to increase Medicare payments. The appointment happens, a clinician completes a form, and the diagnosis enters the payment system. A clinician sees the testing limits. A vendor employee sees the targeting list. A manager sees the instruction to deliver more high-value codes. Taxpayers fund the additional payment while the patient may receive no care for the condition behind it.

The Department of Health and Human Services’ inspector general examined this vulnerability to Medicare Advantage fraud in October 2024: payments for diagnoses that appeared nowhere else in the year’s service records.

$7.5 billion

Estimated Medicare Advantage payments for 2023 from diagnoses reported only on health risk assessments or linked chart reviews, absent from other 2022 service records.

The inspector general raised concerns about inaccurate diagnoses or serious conditions that went without needed care.

HHS-OIG, health risk assessment evaluation, October 2024

In-home assessments and their linked chart reviews generated almost two-thirds of that estimate. Just 20 Medicare Advantage companies accounted for 80 percent.

An unsupported diagnosis can increase the plan’s revenue through risk adjustment without a separate bill for treating the condition. That is why the assessment form matters to finance, at the start of the path from diagnosis to monthly payment.

The financial incentive extends beyond home visits. Upcoding or Selection? Evidence from Medicare on Squishy Risk Adjustment, a 2015 working paper hosted by Duke University, estimated that private Medicare plans generated diagnosis-based risk scores 6% to 16% higher than the same enrollees would generate under fee-for-service Medicare. It also found more intensive coding where insurers and physicians were more closely integrated. The study’s point is that the organization recording the diagnosis can change the payment attached to the same patient.

A health risk assessment creates its own record, often through a visit in the enrollee’s home by plan staff or a contractor, while a look back through existing medical records for payment-relevant diagnoses is a risk adjustment chart review.

The routes can meet: a vendor conducts an assessment, and a later chart review extracts diagnoses from it. The inspector general examined both health risk assessments and the chart reviews linked to them. For someone inside the program, the assessment form and the later coding output answer different questions about how the condition reached the payment file.

Cigna Chose Visits for Their Expected Payment

Cigna’s home-visit program connected member selection, vendor performance and Medicare revenue. In September 2023, the company agreed to a $37 million home-visit settlement and made factual admissions concerning the conduct. That component sat inside the broader $172,294,350 national resolution, which also addressed chart reviews and morbid-obesity coding.

In the local settlement account, the Department of Justice described Cigna targeting members likely to produce the greatest risk-score increases and additional payments. When vendors failed to deliver the expected high-value codes, Cigna provided training to improve their performance. The company’s internal description of its 360 visit program put the purpose plainly: “administrative code capture and not chronic care or acute care management.”

According to an internal report quoted by the department, one vendor’s 6,658 visits in the first nine months of 2014 generated more than $14 million in additional Medicare payments. Cigna paid that vendor approximately $2.13 million. Cigna measured the visits in Medicare revenue.

Cigna acknowledged that the healthcare providers, typically nurse practitioners, did not perform or order the testing or imaging necessary to reliably diagnose the serious, complex conditions reported. In many cases, Cigna prohibited treatment during the visit. The diagnoses at issue lacked support in the completed vendor forms and were not reported by another provider who saw the patient during the same year.

A home visit produced a congestive heart failure diagnosis even though the form described the heart examination as normal and unremarkable. A clinician who remembers the encounter and a coder who sees the output can each explain a different part of that discrepancy.

What Matrix and HealthFair Put in the Assessment Record

The Matrix and HealthFair settlements put the assessment vendors themselves in the payment chain. In its June 2026 announcement, the Department of Justice said Matrix Medical Network would pay $36.5 million and HealthFair would pay $5 million to resolve False Claims Act allegations.

The department alleged that Matrix marketed its ability to identify diagnoses that would raise insurers’ payments, then supplied diagnoses that fell short of recognized clinical criteria. The conditions included rheumatoid arthritis and chronic obstructive pulmonary disease. According to the department, other providers frequently did not diagnose those conditions during the year of the home visit, the preceding two years or the subsequent two years.

The HealthFair allegations described several different failures. Some diagnoses, including metastatic cancer, lacked documentation establishing or confirming the condition. Others rested solely on a patient’s account, claims history, past medical history or medication. The department also alleged that HealthFair diagnosed congestive heart failure and heart arrhythmia despite contradictory electrocardiogram and echocardiogram results.

A missing confirmation, a diagnosis inferred from history and a diagnosis contradicted by a test leave different evidence. The test result, the completed form and the code sent to the insurer allow the clinical conclusion to be compared with what the vendor delivered.

The commercial model helps explain why insurers buy these services. The Private Equity Stakeholder Project’s 2024 report, How Private Equity Gets Its Cut From Medicare Advantage, describes Matrix as an in-home assessment company contracting with insurers. Its account of the assessment business separates the payment opportunity from the cost of treatment:

The report describes visits for assessment and screening, with no treatment provided for existing or new diagnoses. In that business model, identifying another condition can increase what Medicare pays the insurer without the assessment company delivering treatment for it.

The Form Can Direct the Diagnosis

A form can shape the answer before the clinician signs it. The separate chart-review case involving DxID shows how the government alleged that happened: the vendor used leading forms to prompt diagnoses, including conditions drawn from problem lists, laboratory results or an algorithm’s prediction.

A whistleblower started the case, and the government joined it. The government’s complaint alleged that DxID staff went to medical offices, checked diagnoses on forms and presented the prefilled forms for providers to sign. It also alleged that DxID paid providers $25 for each signed and returned medical-record addendum. The alleged process rewarded completion of a document that could supply another diagnosis for payment.

The complaint quoted Independent Health meeting notes reporting that doctors were signing DxID’s addendums without updating the diagnosis list in the medical record.

The same complaint described a major-depression diagnosis taken from a problem list even though the progress note said the patient’s grief-related depression had resolved and medication had been discontinued successfully. The government alleged that the plan submitted the code despite that conflicting information.

We examine where the proposed diagnosis came from, what information the signer actually reviewed and what happened to the diagnosis afterward. The blank form, the prefilled version and the final output can show whether the workflow carried the clinician’s conclusion through to the insurer.

The vendor’s contract supplies another part of that explanation. A fee tied to additional diagnosis revenue gives the vendor a financial stake in the coding result. Together, the form and the contract show what the business asked its staff to produce and what it paid them to deliver.

What Did the Home Visit Establish?

The useful clinical comparison is between the condition reported, the evidence available at the visit and the care, treatment or management documented there. The Department of Justice’s description of diagnosis support makes the connection plain: an outpatient diagnosis must be supported by the face-to-face visit record and must have required or affected care, treatment or management at that visit.

The inspector general identified two concerns: diagnoses could be inaccurate, or patients could have serious conditions for which they did not receive needed health care. The Centers for Medicare & Medicaid Services declined the recommendations for additional restrictions and audits of diagnoses reported only on in-home assessments and linked reviews.

Cigna’s testing limits and treatment restrictions make the design of the visit relevant. HealthFair’s allegedly contradictory cardiac tests make the contents of the assessment relevant. The comparison reaches beyond whether someone wrote a prescription: it includes the available clinical information, the testing needed for the reported condition and any evidence pointing the other way.

Evidence of Medicare Advantage home visit fraud connects the assessment, the submitted diagnosis, the payment and what the company knew. The employee who understands the workflow can explain a connection that a completed form alone leaves out, and that explanation is the core of how to report Medicare Advantage fraud.

We work with you to connect the targeting lists and assessment instructions to the visit notes, test results and diagnoses sent to Medicare. A payment-yield report can show what the organization measured as success.

In Cigna’s separate one-way chart review allegations, the Department of Justice said the company used reviews to add diagnoses but failed to withdraw previously submitted codes the reviews did not support. The same operational question matters after a disputed home assessment: where did the correction go?

A correction entered in a billing file can stop short of the file that feeds CMS. Internal warnings and the response to them can connect a recognized problem to a later submission. We work with the people who understand those systems to establish how the assessment became a payment and who decided what happened after the problem surfaced.

Vendor employees can bring whistleblower cases. The Cigna case began with a whistleblower who had been a part-owner of a home-visit vendor. The Matrix and HealthFair matters came from a former Matrix employee and HealthFair’s chief medical officer.

A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers.

The calendar year 2027 payment announcement excludes diagnoses from chart reviews tied to no encounter, apart from beneficiaries who switch between Medicare Advantage organizations, and for assessment staff the underlying visit record is what separates a linked review from an unlinked one.

You Know What the Assessment Was Built to Deliver

If you saw pressure to produce diagnoses the visit could not support, talk to our whistleblower experts about the assessment program. We build the case with you around the clinical record, the vendor’s instructions and the decisions that sent those codes to Medicare. We stay alongside you and bring in Medicare Advantage whistleblower lawyers who understand assessment vendors and risk-adjustment evidence.