Medicare Advantage Diagnosis Fraud Inside Physician Practices: When the Chart Is Made to Fit the Code

Physician practice risk adjustment fraud uses unsupported diagnoses to increase Medicare Advantage payments to health plans and, through their contracts, to practices. Inside the practice, it can begin with a coder’s prompt, a doctor’s requested signoff or a review that finds diagnoses to add while ignoring ones that should come out. If you have seen the chart change to justify a code already submitted, you have seen a part of the payment story that the final submission may hide.

What Medicare Advantage Risk Adjustment Pays For

Medicare Advantage plans receive a per-person payment to provide covered benefits. The payment reflects the beneficiary’s demographics and health status, and plans generally receive more for people with more severe diagnoses. A practice that supplies the diagnosis information can therefore affect government spending without increasing the price of an office visit.

The Justice Department’s Sutter Health settlement announcement describes the connection directly. Sutter contracted to provide health care to California beneficiaries enrolled in Medicare Advantage plans and received a portion of the plans’ payments. The government alleged that unsupported diagnoses increased payments both to the plans and to Sutter. The diagnosis traveled toward the government, and a share of the money traveled back to the provider.

HCC diagnosis codes feed the risk-score calculation, while the practice’s contract determines how it shares in the money. A practice may receive fees, capitation or a share of risk-based revenue.

The office visit can cost the same while the diagnosis brings in more government money. In a risk-adjustment case, we follow that money through the plan and back to the practice.

How a Diagnosis Becomes Payment Data

A diagnosis can pass through a coder, a clinician, a practice review team or vendor, and a health plan before it affects Medicare Advantage payment. Each participant can see a different version of the same patient’s condition. The useful account connects who proposed the diagnosis, what the clinician documented, what went to the plan and what the plan submitted to the Centers for Medicare & Medicaid Services.

The practice’s records and its payment contract do different work. The encounter shows what happened with the patient. Clinical documentation supplies the support for the diagnosis, submission records show which code entered the payment calculation, and the contract connects the plan’s revenue to the practice’s compensation.

For an insider, the distinction can be immediate: the coder knows where the suggestion originated, while the clinician knows whether the chart supports it. We connect those accounts to the submission and payment records.

Coder Prompts for Unsupported HCC Diagnoses

Complete Health allegedly used incorrect coding guidance and prompts to get doctors to add unsubstantiated chronic diagnoses. The Justice Department’s August 2026 settlement announcement describes a management services organization managing, owning or operating provider groups in Florida, Alabama and Colorado.

The allegations concerned unsupported HCC 55 and HCC 59 diagnosis codes during 2020 through 2023. According to the government, the codes increased government payments that Medicare Advantage plans shared with the platform. Complete Health Partners Holdings agreed to pay $14.1 million to resolve the allegations. A former associate director of risk adjustment at VIVA Health brought the whistleblower case.

The prompt and the doctor’s response belong together. Incorrect guidance can explain why the same unsupported diagnosis appears across records, while the patient’s chart shows what support existed for that particular submission. We examine who supplied the guidance, who endorsed the diagnosis and how it reached the plan.

Add-Only Chart Reviews and Missing Deletions

An add-only chart review searches for missed diagnoses that increase payment while leaving inaccurate diagnoses in place. In the 2018 DaVita Medical Holdings resolution, the government alleged that one-way reviews added missed diagnoses but ignored inaccurate codes that should have been removed.

HealthCare Partners Holdings, doing business as DaVita Medical Holdings, agreed to a $270 million resolution. It combined allegations arising from voluntarily disclosed spinal-condition coding guidance with the one-way-review allegations brought by a former employee of a Medicare Advantage organization that did business with DaVita. The government alleged that the diagnosis information increased risk-adjusted plan payments, with revenue shared with the management organization.

A condition found in a chart but never coded presents an addition question. A diagnosis already submitted without support presents a correction question. DaVita’s alleged one-way process shows how those questions can receive very different treatment inside the same review operation. We see a revenue rule in that alleged design: find what raises payment, ignore what lowers it.

Sutter’s $90 million settlement in 2021 resolved allegations of knowingly submitting unsupported diagnoses and failing to take sufficient corrective action to identify and delete additional unsupported codes after learning of the problem. A former employee of Palo Alto Medical Foundation brought the case. The alleged failure to correct kept the payment problem alive after Sutter knew about it.

For someone working in coding or audit, the difference may be visible in the review instructions and in what happened to the findings. A proposed addition, a proposed deletion and a decision to leave a submitted code untouched tell different parts of the story. We connect the underlying chart to those decisions and to the information that actually reached the plan.

Reports Created After a Plan Questioned the Diagnosis

Seoul Medical Group allegedly enlisted a radiology practice to produce reports appearing to support diagnoses after a Medicare Advantage plan questioned their use. The U.S. Attorney’s Office for the Central District of California’s March 2025 announcement described false spinal enthesopathy and sacroiliitis diagnoses. The government alleged that Renaissance Imaging created the apparently supporting reports and that the diagnoses increased risk-adjusted payments.

Seoul Medical Group and Advanced Medical Management agreed to pay $58.74 million. The whistleblower’s complaint described an internal estimate that unsupported diagnoses had caused or would cause more than $6.7 million in overpayments to Seoul. Seoul received a portion of the plans’ payments, so the alleged diagnostic inflation reached its own reimbursement.

The whistleblower, a former finance executive at Advanced Medical Management, alleged another way support was created after submission:

The complaint alleged that Advanced Medical Management recommended withdrawing the unsupported codes. It alleged that Seoul neither withdrew the false diagnoses nor returned the resulting overpayments.

In this account, the code came first and the supposed support followed. Medicine in reverse. We would want to understand the original entry, the later change and who requested it, because a finished chart can conceal the very sequence that explains the alleged fraud.

Diagnosis Fraud Beside Fee-for-Service Upcoding

Complete Physician Services shows how risk-adjustment allegations and office-visit billing allegations can sit inside the same case. The May 2023 settlement announcement described unsupported morbid-obesity and COPD diagnoses for Medicare Advantage, alongside allegations involving Part B visit coding and supervision.

The practice and two physicians agreed to a $1.5 million settlement covering both kinds of allegations. Former employees brought the case. The Medicare Advantage allegations concerned diagnoses affecting plan payments, while the Part B allegations included upcoded office visits and physician-assistant services billed as incident to a physician’s services while that physician was abroad.

The same practice can therefore generate different payment problems through different records. We trace the diagnosis into the plan’s risk-adjustment submission and the professional service into its own claim.

What Insiders See Inside the Practice

Practice insiders see who chose the diagnosis, what the chart supported and what happened when someone questioned it. A coder may know the instruction behind an addition. A clinician may know what the encounter actually addressed. A risk-adjustment employee may know what was submitted, and a finance employee may know how the resulting revenue was shared.

We connect those accounts to the encounter record, the submitted code and the applicable model year. We follow an audit finding through the decision to add, delete or retain a diagnosis, then connect the submission to the plan payment and the practice’s contract.

For a healthcare professional asked to approve a diagnosis selected elsewhere, the conversation starts with what the patient record actually said and what the request asked you to change. For a reviewer whose deletion findings went nowhere, it starts with the review and the response. Our work is to connect that firsthand knowledge to the clinical record, the submitted information and the money.

What a Diagnosis-Fraud Whistleblower Case Can Pay

A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers. In the DaVita case, the Justice Department announced a whistleblower award of about $10.2 million for the one-way chart-review allegations.

The cases show why the useful insider is not always sitting inside the insurer’s executive suite. Complete Physician Services involved former practice employees, Complete Health involved a risk-adjustment employee at a health plan, and Seoul involved a management company’s finance executive. Their vantage points reached different parts of the diagnosis and payment chain.

When You Know How the Diagnosis Got There

If you saw the prompt, the unsupported signoff or the deletion that never reached the plan, speak with our whistleblower experts about the diagnosis and the payment it changed. We work beside you to build your strongest Medicare Advantage whistleblower case from the clinical facts, the submission history and the decisions inside the practice. We bring in Medicare Advantage whistleblower lawyers who understand diagnosis-coding cases and stay with you through the process.