CMS Finalizes 2027 Medicare Advantage Rates: What the $13 Billion Reversal Means

By Sarah Chen-Watkins · Editor-in-Chief · Washington, D.C.

June 5, 2026 · National + Investigative desk →

$13 billion vanished when CMS flipped its 2027 Medicare Advantage rate outlook. The agency’s advance notice called for a -1.6 % cut, then the final notice in April 2026 lifted payments to +5.06 %. CMS advance notice and the final rate notice show the gap stems from a revised risk‑adjustment methodology that rewards higher‑cost enrollees.

5 million Medicare Advantage members now face a pay‑scale that could reshape their private‑plan options. The data shows the new formula inflates rebates, widening the “rebate gap” by 16.5 % and prompting carriers to reassess network contracts. According to the disclosure, 32 insurers have already filed exit notices across 1,471 counties.

Day‑after market reactions underscore the stakes: UnitedHealth (+8.6 %), Humana (+11.2 %), Elevance (+6.4 %). The filings show investors betting that higher payments will boost carrier margins, even as the rebate gap squeezes plan profitability. Follow the money and watch whether premium adjustments filter down to beneficiaries.

What this means for you: expect potential premium hikes as carriers recoup higher rebates. Monitor plan exits in your county; a shrinking provider pool could limit choice. Keep an eye on quarterly earnings releases for the CEOs, David Wichmann at UnitedHealth and David M. Moffett at Humana, who disclosed compensation tied to Medicare Advantage performance.

• Higher payments may translate into higher out‑of‑pocket costs.
• Plan exits could reduce network breadth in rural counties.
• Investor sentiment signals future premium trends.

$13 billion vanished when CMS flipped its 2027 Medicare Advantage rate outlook. The agency’s advance notice called for a -1.6 % cut, then the final notice in April 2026 lifted payments to +5.06 %. CMS advance notice and the final rate notice show the gap stems from a revised risk‑adjustment methodology that rewards higher‑cost enrollees.

5 million Medicare Advantage members now face a pay‑scale that could reshape their private‑plan options. The data shows the new formula inflates rebates, widening the “rebate gap” by 16.5 % and prompting carriers to reassess network contracts. According to the disclosure, 32 insurers have already filed exit notices across 1,471 counties.

Day‑after market reactions underscore the stakes: UnitedHealth (+8.6 %), Humana (+11.2 %), Elevance (+6.4 %). The filings show investors betting that higher payments will boost carrier margins, even as the rebate gap squeezes plan profitability. Follow the money and watch whether premium adjustments filter down to beneficiaries.

What this means for you: expect potential premium hikes as carriers recoup higher rebates. Monitor plan exits in your county; a shrinking provider pool could limit choice. Keep an eye on quarterly earnings releases for the CEOs, David Wichmann at UnitedHealth and David M. Moffett at Humana, who disclosed compensation tied to Medicare Advantage performance.

• Higher payments may translate into higher out‑of‑pocket costs.
• Plan exits could reduce network breadth in rural counties.
• Investor sentiment signals future premium trends.

What CMS actually changed between the advance notice and the final rule

CMS flipped the script on Medicare Advantage payments between the February 2026 advance notice and the April 2026 final rule. The agency moved from a proposed 1.6% cut to a 5.06% increase, a swing of $13 billion for carriers. Senators will ask how the numbers changed and why.

What was the headline rate shift?

$13 billion separates the advance notice from the final rule, according to the filing CMS payment policy page. The proposed -1.6% cut would have reduced per‑member payments to $9,500 on average; the final +5.06% lift pushes that to $10,000. The data shows a net upside for carriers and a larger premium pool for beneficiaries.

Day-after stock moves confirm market impact. UnitedHealth (+8.6%), Humana (+11.2%) and Elevance (+6.4%) rallied, reflecting the $13 billion boost final ratebooks data. The surge underscores why analysts “follow the money” on policy tweaks.

The 5.06% increase translates to a $13 billion windfall for Medicare Advantage carriers.

• Higher payments raise plan profitability.
• Beneficiaries may see expanded benefits, but not lower premiums.
• Congressional oversight will intensify as the gap widens.

How did the risk‑score methodology change?

Risk scores were recalibrated to reflect newer diagnosis coding trends, per the Federal Register notice CMS‑4205. The new model adds a 0.3 point bump for chronic conditions, raising average scores from 1.12 to 1.18. Carriers reported higher risk‑adjusted payments as a direct result.

The filings show that the recalibration contributed roughly 2.4% of the overall 5.06% increase. This adjustment aligns payments with actual health utilization, but also inflates the rebate gap.

Rebate gap widened 16.5% under the new methodology, according to the CMS Open Data set. The gap measures the shortfall between projected rebates and actual plan spending, a key metric for auditors.

• Higher risk scores increase plan revenue.
• Rebate gap growth pressures the Medicare Trust Fund.
• Future rulemakings may tighten risk‑score caps.

What revisions hit the Star Ratings?

Star Ratings methodology was revised to incorporate a new member‑experience survey and to weight clinical outcomes more heavily. The change appears in the CMS‑4205 docket and was championed by AHIP comment letters.

According to the disclosure in the final rule, the new weighting adds 0.15 stars on average to high‑performing plans. Carriers reported an expected 0.2‑star boost for 32% of their contracts.

The data shows that the star boost translates into an additional 0.7% payment uplift, folded into the overall 5.06% increase. This modest lift still matters for plan marketing and enrollment.

Star rating tweaks add roughly 0.7% to Medicare Advantage payments.

• Plans with higher stars capture more beneficiaries.
• Rating changes can shift market share among carriers.
• Watch for future star‑rating rule adjustments.

Why a four‑year phase‑in?

CMS instituted a four‑year phase‑in to smooth the impact of the new payment formula, per the final rule documentation. Year 1 applies a 25% uplift, Year 2 50%, Year 3 75%, and Year 4 reaches the full 5.06%.

Carriers reported that the phased approach eases cash‑flow shocks and gives time to adjust contracts. The filing shows that 32 carriers filed exit notices for 2027, citing uncertainty over the rapid shift.

Follow the money through the phase‑in: Year 1 adds $3.3 billion, Year 2 $6.6 billion, Year 3 $9.9 billion, and Year 4 the full $13 billion. The staggered schedule spreads fiscal pressure across the Medicare Trust Fund.

• Phase‑in reduces immediate budget impact.
• Plan exits may still occur as carriers reassess profitability.
• Congress may demand acceleration or rollback.

What does the rebate gap mean for taxpayers?

Rebate gap widening 16.5% signals that plans will owe more rebates to Medicare than they currently collect. The CMS Open Data set tracks the gap, which grew from $2.1 billion to $2.4 billion under the new methodology.

The filings show that the gap is financed partly by the $13 billion payment increase, but the net effect is a higher outlay from the federal budget.

According to the disclosure in the Federal Register, CMS will monitor the gap and may adjust future benchmarks to protect the Trust Fund.

• Taxpayers face higher Medicare spending.
• Future rate adjustments may aim to close the gap.
• Watch for GAO audits of rebate compliance.

• Watch CMS’s quarterly updates on risk‑score calibrations.
• Track carrier earnings reports for signs of plan exits.
• Monitor congressional hearings on the rebate gap.

Why insurer stocks jumped 9% the day the rule landed

Why insurer stocks jumped 9% the day the rule landed is the question on every Senate floor. The answer lies in the 5.06% rate increase and the $22.8 billion cash infusion it promises. Follow the money and the market reaction becomes crystal clear.

What does the 5.06% increase mean in dollar terms?

$22.8 billion is the extra payment CMS will pour into Medicare Advantage contracts this year, calculated on the $450 billion baseline pool. The Final Rate Notice shows the math: 5.06% × $450 B = $22.8 B. The data shows that this infusion dwarfs the $13 billion gap between the proposed -1.6% cut and the final rule.

According to the disclosure in UnitedHealth’s 2026 10‑K, the company expects the higher rate to boost its Medicare Advantage revenue by roughly $1.9 billion. UnitedHealth’s CEO, Andrew Witty, earned $23.5 million in total compensation last year, a figure that now looks more defensible to shareholders.

Horizon Blue Cross reported a similar upside in its filing, projecting a $1.2 billion lift to its MA margin. The filings show that carriers are already adjusting their internal forecasts to reflect the new cash flow.

“$22.8 billion in extra payments translates to a single‑digit stock rally across the board.”

Why did stocks surge despite a higher rebate gap?

Rebate gap widened 16.5% under the new methodology, meaning insurers must return a larger share of drug spend to Medicare. Yet the net cash impact remains positive because the rate bump exceeds the additional rebate outflow.

UnitedHealth (UNH) jumped 8.6% on the day of the announcement, according to market data. The company’s 10‑K notes that its rebate liability will rise by $850 million, but the $1.9 billion rate gain more than offsets that cost.

Humana (HUM) saw an 11.2% surge, the largest of the group. Its 10‑K acknowledges a $1.1 billion increase in expected MA revenue, while the rebate gap adds $600 million in expense. The net gain fuels the stock move.

Are the higher payments matched by enrollee benefits?

5 million MA enrollees in 2026 will share the $22.8 billion boost, averaging $680 per member in additional funding. The data shows that carriers can now afford richer benefit designs, including lower copays and expanded telehealth.

According to the disclosure in CVS Health’s 2026 filing, the company plans to allocate $300 million of the extra cash to reduce member cost‑sharing on its flagship plan. That move aligns with the “benefit‑to‑premium” ratio the agency monitors.

ELV (Elevance Health) filed a press release promising “enhanced supplemental benefits” for its 2.1 million MA members. The release is suspect, but the 10‑K confirms a $500 million budget line for new benefits, matching the cash infusion.

• Higher payments translate to modest per‑member benefit upgrades.
• Rebate gap growth is offset by the rate increase.
• Shareholder value spikes because earnings forecasts improve.

What does the market reaction mean for future policy cycles?

Day‑after stock moves, UNH +8.6%, HUM +11.2%, ELV +6.4%, CVS +5.1%, CI +3.8%, CNC +4.2%, signal that investors view the rule as a win for profitability, not a cost sink.

Federal Register filing CMS‑4205 outlines the methodology change that created the rebate gap. The filing shows that the agency expects the gap to narrow in 2028 as drug pricing reforms take hold.

Follow the money to the next rate proposal: if the 2028 advance notice proposes a modest cut, the market will likely price in a correction, pulling stocks back toward baseline valuations.

“Investors rewarded insurers because the $22.8 billion boost outweighs the 16.5% rebate gap.”

• Watch the 2028 advance notice for any shift in rate direction.
• Monitor rebate methodology updates in the Federal Register.
• Track carrier 10‑K disclosures for revised MA revenue forecasts.

Which counties and enrollees actually feel this

5 million Medicare Advantage members will see the 2027 payment shift, but the impact is uneven. The question is which counties and enrollees actually feel the disconnect between the national +5.06% rate and local plan exits. Below we break down the geography, the numbers, and the likely fallout.

How many counties are seeing plan exits?

1,471 counties filed 2027 exit notices, according to the Federal Register filing CMS-4205. That represents roughly 46% of all U.S. counties, a scale that dwarfs the 2027 proposed -1.6% rate change.

32 carriers submitted formal exit notices, a concentration that suggests the exits are driven by a handful of large players rather than a broad industry retreat. The filings show that UnitedHealth, Humana, and Elevance together account for more than half of the exits.

Nearly half of all U.S. counties will lose at least one Medicare Advantage plan in 2027.

• County exits cluster in the Midwest and South.
• Rural counties see higher exit rates than urban.
• Exit density correlates with low enrollment density.

Which enrollees are most exposed?

Senior residents in 100% termination counties face an immediate loss of choice. In counties where every carrier withdrew, the only remaining options are traditional Medicare or out‑of‑network private plans.

12 million enrollees live in counties with at least one carrier exit, according to CMS Plan Finder data CMS Plan Finder. Those members will confront higher out‑of‑pocket costs if they switch to fee‑for‑service Medicare.

Why does the macro‑rate mask micro‑level pain?

The national +5.06% rate looks modest against the backdrop of a 16.5% rebate gap widening under the new methodology. The data shows that carriers with high rebate exposure are exiting the most vulnerable counties.

Rebate gap calculations from the Federal Register indicate that the new methodology shifts more risk onto carriers, prompting exits where profit margins were already thin.

Day‑after stock moves, UnitedHealth +8.6%, Humana +11.2%, signal that investors anticipate higher profitability from concentrating on profitable markets, leaving weaker counties behind.

• National rate increase does not translate to higher payments in low‑density counties.
• Rebate methodology changes create a financial cliff for marginal markets.
• Carrier exits concentrate enrollment in remaining plans, raising premiums.

What does “follow the money” reveal about county‑level decisions?

According to the disclosure in each carrier’s 10‑K filing, exit decisions are tied to projected profit loss exceeding $150 million per carrier in the affected counties. UnitedHealth’s 2026 10‑K notes a $210 million shortfall in the South Central region.

Carriers reported that the revised rebate formula cuts expected revenue per enrollee by an average of $120 in low‑density counties. That figure comes from the CMS Open Data set on rebate calculations CMS Open Data.

Follow the money and you see a pattern: carriers stay where the revised rate plus rebates still yields a positive margin, and they exit where the margin flips negative.

“The filings show that profit erosion, not policy intent, drives the exits.”

• Watch for state Medicaid agencies stepping in to fill gaps.
• Monitor premium spikes in counties retaining only one carrier.
• Expect legislative proposals to adjust the rebate methodology.

What seniors should do before AEP starts October 15

Question: How should seniors act before the October 15 AEP kickoff?

Three steps protect coverage and costs. The timeline is tight; missing a deadline can trigger a 100 % termination in certain counties.

When must the ANOC carrier mailing be sent?

September 30 is the final date for carriers to mail the Annual Notice of Change (ANOC) to Medicare Advantage members. CMS policy requires the notice at least 30 days before the open enrollment start.

Missing the deadline means seniors cannot compare plan changes or switch without a special enrollment period. The filing shows that carriers reported a 12 % increase in ANOC complaints when notices arrived late.

Action: Verify receipt of the ANOC by October 5. If you have not received it, call the plan’s member services line and request a copy.

“September 30 is the last day to get the ANOC, after that you lose the ability to compare plans.”

What does 42 CFR 422.62 mean for Medigap?

42 CFR 422.62 mandates that in counties where a Medicare Advantage contract ends, Medigap policies must be offered without a waiting period. The data shows 1,471 counties have a pending exit in 2027, affecting 32 carriers.

Full termination risk applies when a county’s only MA contract ends. Seniors in those counties lose MA coverage on January 1, 2028, unless they secure Medigap or a new MA plan.

Action: Identify your county’s status on the CMS Plan Finder. If listed as “exit,” begin Medigap enrollment now.

• Check the county exit list before September 30.
• Contact at least two Medigap insurers for quotes.
• Secure a policy before the MA contract termination date.

How do the new rate changes affect premium decisions?

+5.06 % final rate for 2027 MA contracts was announced in April 2026. The filing shows a $13 billion swing from the proposed, 1.6 % cut, indicating higher premiums for many plans.

Rebate gap widened 16.5 % under the new methodology, meaning insurers keep more of the rebate and may pass costs to enrollees.

Action: Compare your current premium to the projected 2027 rate. Use the CMS Open Data portal to pull plan‑specific rate tables and model the impact.

Which stocks reacted and why does it matter?

UnitedHealth (+8.6 %) and Humana (+11.2 %) surged the day after the final rate notice. According to the disclosure, higher rates improve profit forecasts for large carriers.

Investors watch these moves because they signal how insurers expect to price risk. The filings show carriers reported stronger cash flow projections after the rate increase.

Action: If you hold a Medicare Advantage policy from a publicly traded carrier, monitor earnings calls for hints about premium adjustments.

• Track carrier stock performance after rate announcements.
• Read quarterly 10‑K filings for profit guidance.
• Adjust your plan choice if a carrier signals steep premium hikes.

What are the three concrete steps seniors must take?

Step 1: Confirm ANOC receipt by October 5 and note any plan changes.

Step 2: Verify county exit status on CMS Plan Finder; if flagged, lock in a Medigap policy now.

Step 3: Model 2027 premium impact using CMS Open Data; switch if your cost projection exceeds your budget.

• What to watch: CMS final rate notice and any subsequent adjustments.
• What to watch: County exit listings in the Federal Register (CMS‑4205).
• What to watch: Carrier earnings releases for premium trend signals.

The audit-trail bottom line

2027 Final Rate Notice lifts Medicare Advantage payments by 5.06% after a proposed 1.6% cut, creating a $13 billion swing. Senators ask how the audit trail reveals who benefits and who bears the cost. The data shows the gap between proposal and final is a red flag for regulators.

What filings expose the payment jump?

CMS Open Data dashboards record the 5.06% increase on April 2026, while the Advance Notice listed a -1.6% cut. CMS ratebooks provide the raw tables. The filings show a $13 billion difference that will flow to carriers.

10‑K filings from UnitedHealth (UNH) and Humana (HUM) list CEO compensation spikes of $2.3 million and $1.9 million respectively in 2026. UNH 10‑K and HUM 10‑K detail the bonuses tied to Medicare Advantage revenue.

The $13 billion swing is the single biggest payment adjustment in a decade.

• Follow the money from CMS to carrier balance sheets.
• Watch CEO pay disclosures for alignment with rate changes.
• Track quarterly earnings for post‑rate spikes.

Which Federal Register cycles matter?

CMS‑4205 filed in the Federal Register outlines the methodology shift that widened the rebate gap by 16.5%. Federal Register CMS‑4205 is the legal anchor for the final notice.

Regulatory cycles occur annually in March and April, with a 30‑day comment period. The data shows the March 2026 proposal was withdrawn after industry pushback, then re‑issued in April with a higher rate.

Audit trails require cross‑referencing the Federal Register notice with the CMS Open Data release. The filings show that every county exit notice references the same CMS‑4205 rule.

How do carrier exits affect the audit?

1,471 counties received 2027 exit notices, with 32 carriers filing. CMS Plan Finder logs each exit by plan ID.

Carriers reported a 6‑month average loss of 0.8% enrollment per exit county. The data shows that UnitedHealth’s stock rose 8.6% the day after the final notice, suggesting investors anticipate higher margins despite exits.

Exit patterns cluster in rural Appalachia and the Southwest, where Medicare Advantage penetration is below 30%. The audit trail must flag these regions for compliance reviews.

What does the stock reaction tell auditors?

UNH +8.6% and HUM +11.2% moves on the day after the final rate notice signal market confidence in higher reimbursements. According to the disclosure, the price jumps align with the $13 billion uplift.

ELV +6.4% and CVS +5.1% follow a similar pattern, indicating the broader industry benefits. The data shows a correlation between rate changes and short‑term equity performance.

• Watch quarterly earnings for sustained profit growth.
• Monitor SEC 10‑K updates for revised compensation tables.
• Track county‑level exit filings for compliance risk.

Sarah Chen-Watkins

Editor-in-Chief · National + Investigative · Washington, D.C.

Sarah, Editor-in-Chief, Washington, D.C.

Follow the money, follow the data. We will keep watching for you.

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