The last full week before AEP was about scrutiny rather than products: CMS leadership told the Medicare Advantage industry's own forum that oversight continues, MedPAC defended its $76 billion overpayment estimate on the same stage, and CMS froze new ACA broker registrations.
National headlines
1. CMS leadership tells the Medicare Advantage industry that oversight continues
What happened: Speaking at the Better Medicare Alliance's annual forum in Washington on September 22, CMS Administrator Mehmet Oz described Medicare Advantage as a garden that has been vulnerable to weeds and overgrowth and called plan performance and stewardship of taxpayer dollars a top priority. Deputy Administrator John Brooks said the program pays about the most per beneficiary of any program in the world and acknowledged a crisis of confidence in Medicare Advantage. The coverage lists the actions CMS points to: stepped-up RADV overpayment audits and tighter risk adjustment guardrails, alongside a more generous star ratings methodology and higher finalized 2027 rates.
Why it matters: The rate book and the rhetoric are moving in different directions. Plans got a better 2027 payment outcome than the advance notice implied, but the administration is choosing to frame Medicare Advantage publicly as a program with an integrity problem. That framing is what drives audit intensity, coding reviews and the tone of the next rule cycle, and it was delivered to the industry's own lobby.
Strategic implication: Do not read the 2027 rate as a policy all-clear. Treat risk adjustment exposure as the variable most likely to move against you: stress-test revenue against RADV extrapolation and coding-intensity scenarios, and make sure chart-review and in-home assessment programs can withstand audit. For 2028 bid planning, assume scrutiny rises, not falls.
Activity date is the forum appearance (Tuesday, September 22); the reporting date is September 23.
On this site: Policy impact · What's changed
2. MedPAC defends its $76 billion Medicare Advantage overpayment estimate as House Republicans move to change the math
What happened: MedPAC chair Amol Navathe used the same industry forum to defend the commission's finding that Medicare Advantage costs about 14% more, roughly $76 billion a year, than traditional Medicare would for the same beneficiaries, and said MedPAC welcomes substantive methodological critique. Industry groups cite a January CMS analysis with a much lower overpayment estimate and argue MedPAC misses structural differences. Republican lawmakers have advanced the Apples to Apples Comparison Act (H.R. 4093), which would require MedPAC to publish two analyses, one including and one excluding favorable selection.
Why it matters: The overpayment estimate is the number that anchors every benchmark, coding-intensity and quality-bonus debate. If Congress forces a second, selection-adjusted figure, the program will have two official-looking numbers, and the debate shifts from whether Medicare Advantage is overpaid to which estimate policymakers choose to cite.
Strategic implication: Strategy and government-affairs teams should prepare for both numbers to be quoted in 2027 rulemaking. Know where your own plans sit on coding intensity and favorable selection relative to your market, because those are the two levers any future payment adjustment would pull.
The bill's committee progress was reported before the window (STAT, September 16); it is included as context for the MedPAC remarks.
On this site: Regulatory library
3. CMS freezes new ACA broker registrations and cancels 760,000 people's marketplace coverage
What happened: On September 22, CMS announced it had canceled 315,000 unauthorized marketplace enrollments affecting about 760,000 people, reported roughly $2.2 billion in subsidies returned, and issued an interim final rule imposing a temporary moratorium on new agent and broker registrations for the 2027 plan year for those without an active 2026 exchange agreement. More than 200 agents and brokers have been terminated since January. Healthcare Dive reports the freeze runs through February 1, 2027 and that new brokers made up 11% of brokers but 30% of compliance-related terminations in plan year 2026.
Why it matters: This is an ACA action and does not apply to Medicare. It matters to Medicare distribution because many agents and FMOs sell both lines, and because it shows the enforcement logic CMS is now willing to use: new-agent volume and unauthorized switching as a risk signal, remedied by cancelling enrollment and freezing entry rather than fining after the fact.
Strategic implication: Before October 15, review agent onboarding, consent capture and switching patterns in your Medicare channel with the same lens CMS just applied to the marketplace. Expect agents who lose ACA registration or ACA volume to lean harder on Medicare during AEP, and monitor new-agent production and rapid disenrollment by agent as early-warning metrics.
On this site: Sales intelligence
4. SCAN enters Oregon through a co-branded Medicare Advantage plan with a senior-living operator
What happened: SCAN Health Plan will enter Oregon on January 1, 2027 with co-branded Medicare Advantage products built with The Springs Living, an independent-living, assisted-living and memory-care operator, in Clackamas and Washington counties. SCAN serves nearly 460,000 members in six states and framed the partnership around bringing care to where members live and reducing preventable emergency department visits. It follows SCAN's co-branded launches with Costco and Walmart.
Why it matters: Three co-brands in under six weeks makes this a distribution strategy, not an experiment. The senior-living version is different from retail: it attaches the plan to a housing relationship and an on-site care setting, which is a controlled channel with naturally higher engagement and, potentially, a distinct risk profile.
Strategic implication: If you compete in the Portland suburbs, assume a new entrant with a captive channel in specific communities rather than a broad-market launch. More broadly, map the senior-living operators in your footprint; they are becoming contested distribution partners, and the first carrier to sign one tends to hold it.
On this site: Carrier footprint · Compare markets
5. AMA presses CMS to hold the January 2027 electronic prior-authorization deadline
What happened: The American Medical Association urged CMS to keep the January 1, 2027 implementation date under the Interoperability and Prior Authorization final rule, to reject broad enforcement discretion during 2027, and to push EHR developers for implementation timelines and testing. CMS expects the changes to save about $15 billion over 10 years. The AMA cited a December 2025 survey in which only 33% of 1,000 physicians believed payer pledges would lead to significant change.
Why it matters: Medicare Advantage organizations are among the payers covered by the rule. Organized medicine is now publicly arguing against any grace period, which raises the reputational cost of being a plan that is visibly not ready on January 1, and the prior-authorization metrics plans already publish make readiness easy to compare.
Strategic implication: Plan for the deadline holding. Confirm your prior-authorization API and provider-facing workflows are testable with the major EHRs in your markets now, and align the operational story with the prior-authorization metrics your sales and broker teams will be asked about during AEP.
On this site: Policy impact
6. The coding-intensity fight turns on providers, and CMS says AI will raise costs first
What happened: A Blue Cross Blue Shield Association analysis found hospitals' adoption of AI coding tools added about $942 million in costs over two years without evidence of more intensive care: medically complex inpatient cases rose from 37% in early 2023 to 40% at the end of 2025, secondary diagnoses drove about 70% of the increase, and the highest-complexity share of major bowel procedure claims rose from 10.2% to 22.7%. The same day, Oz said AI will temporarily inflate healthcare costs by making billing more effective before it lowers them.
Why it matters: Payers are making the same argument about hospitals that MedPAC and the HHS inspector general make about Medicare Advantage plans. That symmetry matters: whatever standard insurers push for provider coding will be the standard regulators apply to plan risk scores, and CMS leadership is now saying out loud that artificial-intelligence coding inflation is expected.
Strategic implication: Two actions. On the cost side, build DRG and complexity-shift monitoring into payment integrity and contract negotiations. On the revenue side, assume your own AI-assisted risk adjustment will be judged by the evidence-of-care test you apply to hospitals, and document it accordingly.
Oz's remarks on AI and costs are from Healthcare Dive, September 24.
On this site: Spend intelligence
Compiled September 28, 2026. Covers material national developments from September 21-27, 2026, with clearly labeled exceptions where background is needed to read a development inside the window.
Provided for general informational and educational purposes only. It is not legal, financial, insurance or regulatory advice and should not be relied on as such; consult qualified professionals before acting on anything here. © 2026 medicareinsights.org.