Medicare Legislative Timeline & Payment Policy

How sixty years of federal legislation shaped the Medicare you have today

Why I put this together

When I sit down with clients, the most common thing I hear is: "I just don’t understand why Medicare is so complicated."

I created this resource because the more you understand the past and present, the better you can make decisions about the future. You don’t need to memorize any of it, but having the big picture helps.

There’s another reason this matters: Medicare only works if we protect it. As Madison reminded us, a self-governing people must arm themselves with knowledge.

Explore as much or as little as you’d like — use the menu at the top to jump to a topic, and tap any arrow to expand a section. Any questions, give me a holler.

— Chris Cockey Jr
Navigate Health Insurance Services

Timeline Overview

Six decades of federal legislation that shaped Medicare

From its founding in 1965 to the Inflation Reduction Act of 2022. Tap any entry to expand. Use the links above to jump to a section's payment policy in detail.

Founding Expansion Cost / payment Modernization Drug pricing / reform

Origins

1965

Social Security Amendments of 1965

Pub. L. 89-97 — Signed July 30, 1965

Tap to expand

Created Medicare (Title XVIII) and Medicaid (Title XIX). Part A covers hospital insurance funded by payroll taxes; Part B covers supplementary medical insurance funded by premiums and general revenue. Hospitals paid on "reasonable cost" basis; physicians on "usual, customary, and reasonable" charges. Over 19 million enrolled when services began in 1966.

1970s — Early expansion

1972

Social Security Amendments of 1972

Pub. L. 92-603

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Extended Medicare to people under 65 with long-term disabilities and ESRD. Authorized demonstration programs.

1977

HCFA established

Created by HEW Secretary Califano

Tap to expand

Consolidated Medicare and Medicaid under the Health Care Financing Administration. Renamed CMS in 2001.

1980s — Cost controls and benefits

1980

Omnibus Reconciliation Act of 1980

Pub. L. 96-499

Tap to expand

Broadened home health services and brought Medigap under federal oversight.

1982

TEFRA

Pub. L. 97-248

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Added hospice. Introduced first HMO risk-contracting. Required HHS to develop a prospective payment system.

1983

Social Security Amendments of 1983 — DRG / IPPS

Pub. L. 98-21 — Most significant payment reform since 1965

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Replaced cost-based hospital reimbursement with the Inpatient Prospective Payment System using Diagnosis-Related Groups. Fixed payment per case based on diagnosis. Applied only to inpatient Part A operating costs.

1986

COBRA / EMTALA

Pub. L. 99-272 — Signed April 7, 1986

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Required hospitals with emergency rooms to screen and stabilize all patients who come in, regardless of their ability to pay or insurance status. This law is still in effect today.

1988

Medicare Catastrophic Coverage Act

Enacted 1988, mostly repealed 1989

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Created the QMB program (which survived repeal). Surtax on higher-income seniors caused backlash and Congressional repeal of most provisions.

1989

OBRA-89 — Physician fee schedule / RBRVS

Pub. L. 101-239

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Established the Medicare physician fee schedule based on the Resource-Based Relative Value Scale. Replaced "usual, customary, and reasonable" charges. Created Volume Performance Standards.

1990s — Managed care and budgets

1997

Balanced Budget Act of 1997

Pub. L. 105-33 — $116B savings over 5 years

Tap to expand

Authorized OPPS/APCs. Created Medicare+Choice (Part C). Introduced SGR. Mandated PPS for SNFs, home health, rehab. Created SCHIP. Extended Trust Fund solvency.

1999

BBRA & BIPA (2000)

Partially restored BBA provider cuts

Tap to expand

Delayed medical education cuts, restored DSH payments, improved preventive services.

2000s — Prescription drugs

2003

Medicare Modernization Act (MMA)

Pub. L. 108-173

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Created Part D drug benefit. Renamed Medicare+Choice as Medicare Advantage. Introduced HSAs, income-related Part B premiums. Prohibited Medicare from negotiating drug prices.

2010s — Value-based payment

2010

Affordable Care Act (ACA)

Pub. L. 111-148

Tap to expand

Created CMMI and ACOs. Began closing Part D donut hole. Made preventive services free. Slowed provider price growth. Reduced MA overpayments. Introduced hospital quality penalties.

2015

MACRA

Pub. L. 114-10

Tap to expand

Repealed the SGR. Created the Quality Payment Program: MIPS and Advanced APMs. Medicare's formal pivot from volume to value.

2018

Bipartisan Budget Act of 2018

Pub. L. 115-123

Tap to expand

Accelerated donut hole closure. Expanded MA supplemental benefits and telehealth.

2020s — Drug pricing reform

2022

Inflation Reduction Act (IRA)

Pub. L. 117-169

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Authorized drug price negotiation. Capped insulin at $35/month. Capped Part D OOP at $2,000/year. Inflation rebates. Free vaccines. $237B deficit reduction over 10 years.

Deep Dive for the Nerds (Like Chris)

The legislation that built Medicare's payment system

Eight laws across six decades, each one making real progress — and leaving real work undone. Expand any section below to explore the details.

1965 — The Founding Payment Model

Social Security Amendments of 1965 (Pub. L. 89-97) — Medicare was created with a payment structure designed to encourage broad provider participation and ensure seniors could access care.

The original design

When Congress created Medicare, its top priority was getting hospitals and doctors to participate. To make that happen, lawmakers designed a payment system that was very generous to providers. Hospitals were paid on a "reasonable cost" basis — meaning Medicare simply reimbursed whatever the hospital spent to care for a patient. Doctors were paid based on their "usual, customary, and reasonable" (UCR) charges — essentially, whatever they normally charged, as long as it was in line with what other doctors in the area charged.

Before Medicare, only about 56% of Americans over 65 had any health insurance at all, and those who did often paid premiums three times higher than younger adults. The 1965 Act closed this gap by guaranteeing health coverage to seniors as a right.

Two-part structure

Part A — Hospital insurance

Covers inpatient hospital, skilled nursing, and hospice. Funded by mandatory FICA payroll taxes deposited into the Hospital Insurance Trust Fund. Automatic enrollment for qualifying workers.

Part B — Supplementary medical insurance

Covers outpatient and physician services. Funded by beneficiary premiums (initially $3/month) and general federal revenue. Voluntary enrollment. Medicare pays 80% of "reasonable charge"; beneficiary pays 20% coinsurance.

Why this payment model couldn't last

This generous payment approach worked exactly as intended — hospitals and doctors signed up in huge numbers, and seniors gained access to care they couldn't afford before. But there was a major flaw: the system gave providers no reason to hold down costs. The more a hospital spent, the more Medicare paid it back. The more tests a doctor ordered, the more fees they collected. Combined with new medical technologies and a growing number of enrollees, Medicare spending grew at double-digit rates every year through the late 1960s and 1970s. By the early 1980s, the Part A Trust Fund (the account that pays for hospital care) was running out of money, and Congress had to act.

Was it just 1970s inflation?

The 1970s were a time of high inflation across the whole U.S. economy — gas prices, groceries, and housing all went up. So it's fair to ask: was Medicare's cost problem just part of that general trend? The answer is no. General inflation played a role, but healthcare costs were rising much faster than prices in the rest of the economy. Even after accounting for overall inflation, real healthcare spending still grew about 5% per year during the 1970s. Economists have broken down what was actually driving costs into four categories:

What drove Medicare spending growth?

Approximate breakdown of annual health spending increases during the 1970s–80s into four distinct categories

That last category — more services per patient — is the most important one. Hospital admissions didn't grow much during the 1970s, only about 1–2% per year. What grew dramatically was how much was done during each hospital stay: more lab tests, more imaging, more specialized procedures, more equipment. Much of this reflected real medical progress — new technologies that saved lives. But under a system where Medicare paid for everything without question, there was no way to tell the difference between spending that actually helped patients and spending that didn't. Hospitals and doctors had no financial reason to ask "is this extra test really necessary?" because Medicare paid for it either way.

Proof that the payment system — not bad doctoring — was the real problem: When Congress replaced cost-based payment with fixed-price DRGs in 1983, hospital behavior changed almost overnight. Medicare hospital stays dropped significantly in the first two years, and hospital spending growth in 1985 slowed to the smallest annual increase in Medicare's history. Hospitals found ways to deliver care more efficiently once the financial incentives changed — without the access problems that critics had feared. This showed that the runaway spending had been caused by how Medicare paid, not by how doctors practiced medicine.

This is an important point because it explains the logic behind every payment reform that followed. From 1983 through 2022, each reform was Congress trying to change the financial rules so that doctors and hospitals would be rewarded for delivering care efficiently — not just for delivering more of it.

1983 — The DRG Revolution

Social Security Amendments of 1983 (Pub. L. 98-21) — Medicare replaced its blank-check hospital payment system with prospective, fixed-price reimbursement.

The problem

By the early 1980s, Medicare hospital spending was growing at staggering rates — hitting as high as 21% in 1980. The Part A Trust Fund (the account that pays for hospital stays) was running out of money. The reason was simple: if you pay hospitals more for spending more, they have no reason to hold down costs.

How DRGs (Diagnosis-Related Groups) work

A DRG is a category for a patient's hospital stay based on their diagnosis. For example, "hip replacement" is one DRG, "pneumonia" is another. Medicare pays the hospital a fixed dollar amount for each DRG — no matter how much the hospital actually spends on that patient's care.

Patient admitted

→

Treated & discharged

→

Case assigned a DRG

→

Fixed payment issued

→

Hospital keeps or absorbs difference

The payment amount for each DRG is adjusted based on where the hospital is located (wages vary by region), whether it's a teaching hospital, and how many low-income patients it serves. The system was developed at Yale University, tested in New Jersey, and rolled out nationally on October 1, 1983.

Pre-DRG spending growth

~19%

Annual avg, 1973–1983

Post-DRG spending growth

~12%

Projected mid-1980s

Original DRG categories

~475

Now 740+ MS-DRGs

Medicare hospital share

27%

Of all U.S. hospital spending

What it left unfinished

The DRG system only applied to inpatient hospital stays under Part A. Everything else — outpatient visits, doctor's office visits, skilled nursing facilities, and home health care — was still paid the old way (cost-based). This gap, especially for outpatient care, lasted 17 years until the 1997 Balanced Budget Act finally addressed it.

1989 — The Physician Fee Schedule

OBRA-89 (Pub. L. 101-239) — Medicare created a standardized, resource-based system for paying physicians.

The problem

The 1983 DRGs slowed hospital cost growth, but doctor spending under Part B kept rising fast. Under the old system, doctors simply charged whatever they wanted and Medicare paid it. There was no standard price list. A Harvard team led by Dr. William Hsiao developed a better approach: the Resource-Based Relative Value Scale (RBRVS) — essentially, a standardized price list for every medical service based on how much work, training, and expense each one actually requires.

How RBRVS works

Each medical service is assigned a point value (called a Relative Value Unit, or RVU) based on three things:

Physician work (~50%)

Time, effort, technical skill, mental complexity, and stress of performing the service.

Practice expense (~44%)

Rent, equipment, non-physician staff, supplies.

Malpractice (~6%)

Professional liability insurance costs.

How the payment is calculated: The point value (RVU) for a service is adjusted for local costs (since practicing in Manhattan costs more than rural Kansas), then multiplied by a dollar amount called the "conversion factor." The fee schedule took effect in 1992. Today, Medicare's physician fee schedule covers over 10,000 different services.

Volume Performance Standards

Alongside the fee schedule, OBRA-89 created the Volume Performance Standards — the first attempt to set expenditure targets for physician spending. This system proved ineffective and was replaced by the SGR in the 1997 BBA.

Lasting significance

The RBRVS is still the foundation of how Medicare pays doctors today. It brought order to a system that had none. However, it also created a lasting imbalance: specialists who perform procedures (like surgeons) tend to be paid more generously than primary care doctors — a gap that many believe has contributed to the shortage of family doctors and general practitioners. The committee that recommends point values for services (the RUC) is made up mostly of specialists, which critics say tilts the system in their favor.

1997 — The Balanced Budget Act

Pub. L. 105-33 — The largest savings package in Medicare history restructured payment across virtually every provider type.

Scale of the BBA

5-year savings

$116B

1998–2002

10-year savings

$394B

Largest in Medicare history

Trust Fund extended

2007+

From projected 2001 insolvency

Spending growth

8.5→6%

Annual average reduction

Four pillars of reform

OPPS / APCs

Extended DRG logic to hospital outpatient services via Ambulatory Payment Classifications.

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Authorized in 1997 and implemented in August 2000, this replaced the old cost-based system for outpatient care with fixed prices grouped by procedure type. One important side effect: hospital outpatient departments ended up being paid more than independent doctor's offices for the exact same service — a gap that still exists today and drives debate about fairness in Medicare payment.

SGR

Tied physician fee updates to GDP growth — sensible in concept, disastrous in practice.

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Replaced the old system with a formula tying doctor spending targets to economic growth. The idea was sensible — doctor spending shouldn't grow faster than the economy. But when the economy slowed, the formula called for a 4.8% pay cut in 2002. After that, Congress had to pass emergency "doc fix" patches 17 times between 2003 and 2014 to prevent further cuts, before MACRA finally replaced the whole system in 2015.

Medicare+Choice (Part C)

Created the managed-care framework that became Medicare Advantage.

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For the first time, allowed Medicare beneficiaries to get their coverage through private health plans (HMOs and PPOs) instead of traditional Medicare. Medicare would pay the private plan a fixed monthly amount per person, and the plan would manage all their care. This program was later renamed Medicare Advantage in 2003.

Post-acute PPS

Extended prospective payment to SNFs, home health, and rehab hospitals.

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Extended fixed-price payment to skilled nursing facilities (1998), home health agencies (2000), and rehabilitation hospitals (2002). This finished the job that the 1983 DRG system started — moving virtually all of Medicare's providers from "pay whatever it costs" to "pay a set price."

Unintended consequences

The payment cuts turned out to be deeper than Congress intended. Teaching hospitals, rural hospitals, and home health agencies were hit especially hard. Congress had to pass two follow-up laws in 1999 and 2000 to partially restore some of those payments. And the SGR formula for doctor pay became a 17-year headache, requiring Congress to pass emergency fixes nearly every year until MACRA finally replaced it in 2015.

2003 — Medicare Modernization Act

Pub. L. 108-173 — The biggest structural change in 38 years added prescription drug coverage and expanded private plan options.

Part D: prescription drug coverage

The MMA created Medicare Part D — the first time Medicare covered prescription drugs you pick up at the pharmacy. Starting in January 2006, beneficiaries could sign up for a private drug plan (a standalone PDP or through a Medicare Advantage plan). The benefit had four phases: a deductible, an initial coverage period, a coverage gap known as the "donut hole" (where you paid more out of pocket), and catastrophic coverage for very high drug costs.

The negotiation prohibition: The MMA included a controversial rule: Medicare itself was not allowed to negotiate drug prices with pharmaceutical companies. Each individual drug plan could negotiate on its own, but the government's enormous purchasing power — representing tens of millions of seniors — was kept off the table. This prohibition lasted 19 years until the 2022 Inflation Reduction Act finally reversed it.

Other key provisions

Medicare Advantage

Renamed Medicare+Choice. Substantially increased plan payments, spurring rapid enrollment growth.

Income-related premiums

For the first time, higher-income beneficiaries paid more for Part B (IRMAA).

HSAs

Created tax-advantaged Health Savings Accounts paired with high-deductible plans.

45% funding trigger

Required a "funding warning" if general revenue was projected to exceed 45% of total program spending.

Why this matters for how Medicare works today

After the MMA, Medicare had three very different systems running at the same time: Original Medicare (Parts A and B) where the government pays doctors and hospitals directly for each service, Medicare Advantage (Part C) where private plans receive a flat monthly payment per person and manage all your care, and Part D where private drug plans handle your prescriptions. These three approaches still coexist today, which is why Medicare can feel so complicated.

2010 — The Affordable Care Act

Pub. L. 111-148 — Beyond coverage expansion, the ACA fundamentally reoriented Medicare payment toward value over volume.

Medicare-specific reforms

CMMI — Innovation Center

$10 billion/decade laboratory for new payment and delivery models.

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Created as a testing lab for new ways to pay for healthcare. Instead of waiting for Congress to pass a new law every time, the Innovation Center can try new payment approaches on a smaller scale and expand the ones that work. It tests ideas like rewarding doctors for keeping patients healthy rather than just treating them when they're sick.

Medicare Shared Savings Program

Permanent national ACO program in traditional Medicare.

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Groups of doctors, hospitals, and other providers team up and agree to be responsible for the overall cost and quality of care for their patients. If the group keeps their patients healthy and spends less than expected, they share in the savings. If they spend more, some must pay money back. By 2022, over 480 of these organizations were caring for roughly 11 million Medicare beneficiaries.

Provider payment slowdowns

Permanently slowed default price growth for most providers.

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Permanently slowed down how fast Medicare's payments to hospitals and other providers grow each year — by about 1 percentage point less than they would have otherwise. This was the ACA's main tool for keeping Medicare financially stable long-term. It also reduced the extra payments that Medicare Advantage plans had been receiving compared to traditional Medicare.

Donut hole & preventive care

Closed the Part D coverage gap and made preventive services free.

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Gradually closed the Part D "donut hole" — the coverage gap where seniors previously had to pay the full cost of their drugs. By 2020, out-of-pocket costs in the donut hole were reduced from 100% to 25%. Also made preventive services free — annual wellness visits, screenings, flu shots, and more — with no copay or deductible. Nearly 12 million seniors saved over $26 billion on prescriptions by 2019.

Hospitals penalized for poor quality

The ACA created new programs that, for the first time, penalized hospitals financially for poor results. Hospitals that had too many patients readmitted within 30 days, or too many hospital-acquired infections, received lower Medicare payments. This was a major shift — Medicare was no longer just paying for services, it was paying based on how well those services turned out.

The ACA laid the groundwork for MACRA five years later. By creating the Innovation Center, establishing ACOs, and introducing quality-based penalties, the ACA built the foundation for shifting Medicare from a system that paid for volume (more services = more pay) to one that paid for value (better care = better pay).

2015 — MACRA

Medicare Access and CHIP Reauthorization Act (Pub. L. 114-10) — Medicare's formal pivot from volume-based to value-based physician payment.

Repealing the SGR

After 17 temporary "doc fix" patches from 2003 to 2014, Congress finally scrapped the broken SGR formula for good. (Without the fixes, doctor pay would have been cut by more than 25%.) Replacing it added about $141 billion to the federal deficit. In its place, MACRA created the Quality Payment Program (QPP) with two tracks:

Track 1: MIPS

Merit-based incentive

Doctors are scored on four things: quality of care (30%), cost efficiency (30%), use of electronic health records (25%), and participation in improvement activities (15%). Based on their score, their Medicare pay is adjusted up or down by up to 9%. Most Medicare doctors are in this track.

Track 2: Advanced APMs

Alternative payment models

Doctors who participate in programs where they share financial risk (like ACOs or bundled payment arrangements) can skip MIPS and receive a 5% bonus instead. These models require doctors to put some of their own pay at risk if costs run too high.

Doctor pay isn't keeping up

MACRA gave doctors very small annual pay increases: just 0.5% per year from 2015 to 2019, then a complete freeze (0%) from 2020 to 2025. Starting in 2026, increases are only 0.25% to 0.75% per year. Meanwhile, the cost of running a medical practice — rent, staff, equipment, malpractice insurance — has gone up much faster. According to the AMA, Medicare doctor pay rose only 11% between 2001 and 2021, while practice expenses increased 39%. Many doctors say Medicare is paying them less and less in real terms.

The big picture: MACRA was the culmination of a 30-year journey. The 1989 RBRVS standardized how services are valued. The 1997 SGR tried (and failed) to control how much was spent. The 2010 ACA built institutional infrastructure for value-based care. MACRA tied it all together — for the first time adjusting individual physician payments based on quality and cost performance.

Ongoing challenges

MIPS has been widely criticized as overly complicated for the small payment adjustments it produces. Many doctors feel the paperwork and reporting requirements aren't worth the trouble. The alternative track (Advanced APMs) hasn't attracted as many doctors as Congress hoped, partly because smaller practices can't afford the financial risk. And with pay raises frozen or nearly frozen for years, doctor groups are increasingly pushing Congress to fix the payment system so it at least keeps up with inflation.

2022 — The Inflation Reduction Act

Pub. L. 117-169 — The most significant drug-pricing reform since Part D was created, reversing a 19-year prohibition on Medicare price negotiation.

Drug price negotiation

The IRA authorized Medicare to negotiate "maximum fair prices" directly with manufacturers for high-cost drugs — reversing the MMA's 2003 prohibition. The program phases in gradually:

Year	Drugs selected	Coverage
2026	10 drugs	Part D only
2027	15 additional	Part D only
2028	15 additional	Part D and Part B
2029+	20 per year	Part D and Part B

Drug companies that refuse to negotiate face a steep penalty tax — starting at 65% of their U.S. sales and rising to as high as 95%. The Congressional Budget Office estimates these drug pricing provisions will save taxpayers $237 billion over ten years.

Beneficiary cost protections

Insulin cap

$35/mo

Per covered product, Part D & B

Part D OOP cap

$2,000

Annual maximum, effective 2025

Vaccines

All ACIP-recommended vaccines

Inflation penalty

Rebates

Mfrs pay rebates if prices rise faster than CPI

What this means for you

Before the IRA, there was no limit on what you could spend out of pocket on prescriptions in a year. Even in the "catastrophic" phase of Part D, you still owed 5% of drug costs — which could add up to thousands of dollars for expensive medications. The IRA changed that: starting in 2025, your total out-of-pocket drug costs are capped at $2,000 per year, period. After you hit that cap, you pay nothing more. The law also shifted more of the cost burden onto drug plans and manufacturers, giving them a stronger incentive to keep drug prices down.

The policy reversal: The MMA (2003) created Part D but prohibited negotiation. The ACA (2010) closed the donut hole but left negotiation untouched. The IRA (2022) finally broke the prohibition — a fundamental shift in Medicare's relationship with the pharmaceutical industry.

Summary — "Just Get to the Point, Pal"

How they all connect: sixty years of cause and effect

Every major Medicare law fixed a problem the previous one created — and left behind a new problem for the next Congress to solve.

The problem: a payment model with no brakes

When Medicare launched in 1965, hospitals submitted their costs and Medicare paid them back in full — plus a profit margin. Doctors charged whatever they wanted. There were no limits on prices, no caps on volume, and no proof required that a treatment was the most cost-effective option.

This was intentional — Congress made Medicare generous to persuade providers to participate, and it worked. But with the government writing blank checks, spending exploded. Medicare hospital costs grew at double-digit rates every year through the 1970s, peaking at over 21% in 1980. By the early 1980s, the Part A Trust Fund was running out of money.

The core flaw: The more a hospital spent, the more it got paid back. Every test a doctor ordered generated a fee. The system had an accelerator but no brake pedal.

That crisis set the stage for everything below. Each step in this chain was an attempt to fix the incentives the original 1965 model created.

The chain of cause and effect

1965

Medicare launched with "pay whatever it costs" reimbursement. It got doctors and hospitals to participate — but there were no spending controls at all.

1983

Fixed-price DRGs for hospital stays slowed cost growth — but outpatient care, doctor visits, and nursing homes were still paid the old way.

1989

A standardized fee schedule (RBRVS) replaced "charge whatever you want" for doctors — but doctor fees and hospital fees were now on separate tracks, so the same service could cost Medicare different amounts depending on where it was done.

1997

The Balanced Budget Act extended fixed prices to outpatient care, nursing homes, and home health. It also tried to cap total doctor spending with the SGR formula — but hospital outpatient rates were set higher than doctor's office rates for the same service (fueling hospital buyouts of practices), and the SGR proved so unworkable Congress had to override it 17 times.

2003

The Medicare Modernization Act added prescription drug coverage (Part D) and expanded private plan options into what we now know as Medicare Advantage (Part C) — giving seniors more choices than ever — but Congress banned Medicare from negotiating drug prices, leaving one of the biggest cost-saving tools off the table.

2010

The ACA created value-based programs (ACOs, quality penalties, CMMI), started closing the Part D donut hole, and slowed provider price growth — but didn't fix the broken doctor pay formula or the drug negotiation ban.

2015

MACRA killed the broken SGR and created the Quality Payment Program, tying doctor pay to quality and cost for the first time — but annual pay updates (0%–0.75%) haven't kept up with practice costs, which rose ~39% from 2001 to 2021.

2022

The Inflation Reduction Act broke the 2003 drug negotiation ban. Medicare can now negotiate prices directly, cap seniors' out-of-pocket drug costs, and penalize companies that raise prices faster than inflation. But to offset their exposure, insurers have responded by shifting costs to members: higher copays, narrower formularies, and rising prescription plan premiums.

How Medicare pays providers today

These three approaches are the product of sixty years of reform. Each was added on top of the previous ones rather than replacing them — which is why Medicare can feel so complicated, and why the same medical service can cost different amounts depending on your coverage and where you receive care.

Fee-for-service — Traditional Medicare (Parts A & B)

Medicare pays providers directly for each service or episode of care delivered to a beneficiary.

Tap for details

This is the original Medicare model, and it's what you have if you're enrolled in "Original Medicare" (Parts A and B). The government pays your doctors and hospitals directly. There are two ways this works:

Pay per service (for doctor visits): Every time you see a doctor, get a blood test, or have an X-ray, Medicare pays a separate fee for each one. If your doctor orders five tests, Medicare pays five separate bills. This is straightforward, but it means there's a built-in incentive to order more services.

Pay per diagnosis (for hospital stays): When you're admitted to the hospital, Medicare pays one fixed amount based on your diagnosis — not based on how many individual things the hospital does for you. For example, a pneumonia admission pays a set amount whether you're there for three days or five days. This gives hospitals a reason to treat you efficiently, because they keep the same payment either way.

Both are called "fee-for-service" because Medicare pays each time you receive care. The difference is whether Medicare pays per individual service (doctor visits) or per episode of care (hospital stays).

Capitation — Medicare Advantage (Part C)

Medicare pays a private plan a flat monthly amount per beneficiary, and the plan takes over all payment decisions.

Tap for details

If you're enrolled in a Medicare Advantage plan (Part C), your coverage works completely differently. Instead of the government paying your doctors and hospitals directly, Medicare sends a fixed monthly payment to your private health plan for each person enrolled. The plan then uses that money to pay for your care.

If the plan can cover your care for less than what Medicare paid them, the plan keeps the savings (and often uses some of it to offer you extra benefits like dental or vision). If your care costs more than what Medicare paid, the plan takes the loss. Today, more than half of all Medicare beneficiaries are enrolled in Medicare Advantage.

The key difference from Original Medicare: with Medicare Advantage, your private plan — not the government — decides how to pay doctors and hospitals and manages your care. Medicare's job is to pay and oversee the plan.

Value-based overlays — ACOs, MIPS, bundled payments

Performance-based adjustments layered on top of the existing fee-for-service and capitation systems.

Tap for details

These are newer programs layered on top of the existing system. Doctors and hospitals still get paid the regular way, but their pay is then adjusted up or down based on how well they perform. Think of it as a bonus-and-penalty system built on top of the regular payment.

MIPS (Merit-based Incentive Payment System): Doctors still bill Medicare for each service, but at the end of the year their total pay is adjusted up or down (by up to 9%) based on quality scores. Doctors who score well earn a bonus; those who score poorly get a pay cut.

ACOs (Accountable Care Organizations): Groups of providers agree to be responsible for the overall health and costs of their patients. If the group keeps total spending below a target while maintaining quality, they share the savings. In some arrangements, they also have to pay back money if they go over budget.

Bundled payments: Medicare sets one target price for an entire course of treatment — like a hip replacement plus 90 days of recovery and follow-up. If the providers handle it for less than the target price, they keep the savings. If it costs more, they cover the difference.

The simple way to remember: Medicare Advantage replaces Original Medicare with a private plan. Value-based programs keep Original Medicare in place but add rewards for good results and penalties for poor ones.

Debates That Aren't Settled Yet...

Five questions sixty years of reform haven't answered

The chain of cause and effect didn't resolve everything. These tensions run through the Medicare story and remain very much alive today.

Should hospitals be paid more than independent offices?

Hospital outpatient departments have always been paid more than independent physician offices for the same service — and hospitals say there's a reason. They maintain 24/7 emergency capacity, serve as safety nets in underserved communities, bear heavier regulatory and compliance costs, and cross-subsidize services that lose money but keep people alive. Higher outpatient rates help cover that overhead, and hospitals argue that cutting those rates threatens the broader infrastructure patients depend on.

But critics point out the gap has also created a powerful financial incentive for hospitals to buy up independent practices — not to expand services, but to bill the same care at higher rates.

Hospital outpatient rate

Higher payment
Same doctor, same service, same building — but billed under the hospital

Physician office rate

Lower payment
Independent practice, same service, often same location

This gap incentivizes hospitals to acquire physician practices —
same care, higher reimbursement.

CMS is actively trying to close this gap. The 2026 OPPS final rule reduced payments for drug administration at off-campus hospital outpatient departments by roughly $290 million — a direct move toward "site-neutral" pricing. Reformers say it's long overdue. Hospitals say it puts essential services at risk. The debate is no longer theoretical — it's happening now.

Are doctors being paid enough?

Congress designed MACRA to control Medicare spending by replacing the unpredictable SGR with small, stable annual updates (0.25%–0.75%) — and by supplementing base pay with quality bonuses that reward better outcomes. The idea was to shift physician income toward performance rather than volume, while keeping the fee schedule sustainable for a program covering 67 million people. For 2026, Congress approved a 3.26% increase, the largest in years.

But physician groups say the math hasn't worked. Practice costs have climbed roughly 39% since 2001, far outpacing those small updates. The 2026 increase includes a one-time 2.5% add-on that expires, and it's offset by a separate efficiency adjustment — so the underlying statutory rate barely moves. The quality bonuses haven't filled the gap either.

MACRA annual raise

0.25–0.75%

Statutory update per year

Practice cost growth

~39%

2001–2021 (inflation-adjusted)

2026 increase

3.26%

Includes one-time 2.5% add-on that expires

The AMA says Medicare now pays less than what it costs many practices to deliver care, and some worry it could get harder for seniors to find doctors who accept Medicare — especially in rural areas and primary care. Whether the answer is larger fee updates, better-funded bonus programs, or a different payment model entirely remains an open question.

Is value-based care the future of Medicare?

The case for moving beyond fee-for-service is compelling. Value-based care ties provider income to outcomes instead of volume — rewarding doctors and hospitals for keeping patients healthy, not for ordering more tests. Medicare Advantage introduced private market competition, with insurers using cost control tools like prior authorization and care coordination that commercial plans have relied on for decades. That's exactly why policymakers brought private insurers into Medicare: the idea that competing plans would deliver care more efficiently. Advocates also argue that emerging technology, including AI, can reduce the burden of outcomes tracking and help modernize care delivery.

Fee-for-Service
Pay per service
Rewards volume

→

MA Managed Care
Capitated payments
Insurer cost controls

→

Value-Based Care
Pay for outcomes
Rewards quality

But the transition has real trade-offs. Fee-for-service, for all its flaws, is simple and gives patients unrestricted access to providers. Prior authorization — one of managed care's primary cost controls — has created significant administrative burden for providers, and critics argue it has led to unnecessary delays in care. Studies have also shown MA often costs Medicare more per beneficiary than Original Medicare, raising questions about whether the efficiency promise has been delivered. Some provider groups, rural practices that lack the infrastructure to track outcomes data, and some policymakers argue FFS should be reformed rather than replaced.

CMS remains committed to both value-based care and Medicare Advantage as the program's future. The fundamental question: can Medicare find a model that controls costs, reduces fraud and waste, improves health outcomes, and still protects patients?

Is vertical integration helping or hurting Medicare?

Major insurers have been buying up doctor's practices, clinics, and primary care chains — and there's a reasonable case for why. When one organization manages both coverage and delivery, it can coordinate care, reduce duplication, and invest in prevention. Some of the highest-rated MA plans are integrated systems, and studies in JAMA and from the Commonwealth Fund have found that well-run integration leads to better outcomes.

But critics argue integration has also opened a backdoor around the Medical Loss Ratio, which requires plans to spend at least 85% of revenue on patient care. When an insurer owns the provider, the money it pays for care flows right back to itself — and rising costs actually increase the dollar amount it can keep.

The vertical integration loop

Insurer buys provider network

→

Pays itself for patient care

→

Higher costs = bigger 85% slice

→

More revenue retained as profit

The MLR was meant to cap profit — but vertical integration can turn medical spending into internal revenue.

Risk adjustment has a related problem: plans receive higher payments for sicker members, which creates an incentive to document every possible diagnosis — inflating risk scores without changing patient care. The GAO estimates this costs taxpayers billions per year. CMS is responding on both fronts, tightening risk adjustment rules in 2027 and seeking public input on how MLR is calculated. But with consolidation accelerating, the central question remains: is integration delivering better care — or are the financial incentives tilting toward profit?

Are supplemental benefits a health tool or a marketing tool?

Medicare Advantage plans offer extras that Original Medicare doesn't cover — dental, vision, hearing, over-the-counter allowances, grocery cards, and gym memberships. Supporters argue these benefits address real gaps in coverage. Untreated dental or vision problems lead to costlier health issues down the road, and for many seniors on fixed incomes, these extras are the difference between getting care and going without. Spending on supplemental benefits has nearly tripled in a decade, reflecting genuine demand.

2015 per beneficiary

$912

Supplemental benefit spending

2026 per beneficiary

$2,664

Nearly 3× growth in a decade

10-year projection

$1.3T+

Total supplemental benefit spending

But critics question whether all of these extras actually improve health outcomes — or whether some are primarily marketing tools designed to drive enrollment and grow market share. CMS began limiting some Special Supplemental Benefits for the Chronically Ill (SSBCI) in 2026, and some policymakers want to go further, restricting extras to members whose chronic conditions would benefit most. With supplemental benefits now a top reason seniors choose Medicare Advantage, the tension between meeting real needs and sustaining the program is only growing.

The Problem We Can't Keep Ignoring

The looming problem no one is fixing

Medicare has two funding mechanisms. One has a deadline that forces action. The other is an open tab on the national credit card — with no limit and no plan to pay it off.

Total Medicare spending

~$1.15T

Fiscal year 2025 — one of the largest federal budget items

Share of GDP

3.8% → 6.2%

Projected growth by 2049 (Trustees Report)

Share of income taxes

17% → 22%

Of all federal income tax revenue goes to Part B & D — by 2030 (MedPAC)

2026 Part B premium

$202.90/mo

~10% jump from 2025 — and that's only 25% of the cost

Most Medicare media coverage is about Part A's trust fund — funded by payroll taxes, projected to be insolvent by 2033, and Congress has always stepped in before the deadline. But Part A has a built-in discipline mechanism: when the money runs out, action is forced. The more serious problem is the one that gets far less attention.

Part A funding

Payroll taxes → Trust Fund
Can run out → forces Congress to act
Built-in alarm bell

Part B funding

General revenue + premiums
Can't run out → auto-appropriated
Alarm ignored. No limit.

Part A has a deadline that forces action. Part B has an open tab.

Part B: the open tab nobody talks about

Medicare Part B — doctor visits, outpatient care, lab work, drugs administered in clinical settings, ambulance services, durable medical equipment — is funded roughly 75% by general tax revenue and 25% by beneficiary premiums. It technically has a trust fund (the Supplementary Medical Insurance Trust Fund), but unlike Part A's, it's designed to never run out. That was intentional: Congress built Part B's auto-appropriation to guarantee that beneficiaries would never lose access to care because of a revenue shortfall. Premiums are recalculated each year, and general revenue fills the rest — no vote required. The trade-off is that this design removed the cost-forcing mechanism Part A has. There is no insolvency deadline to trigger action. A funding warning trigger created in 2003 has sounded repeatedly, but Congress has not acted on it. The money continues to flow, automatically, from the U.S. Treasury.

According to CBO projections, Part B's share of Medicare is growing faster than almost any other federal obligation, and because it draws from general revenue, every dollar of growth adds directly to the federal deficit. The 2026 standard Part B premium rose to $202.90 per month — a nearly 10% jump from 2025 — reflecting this accelerating cost curve. But the premium increase covers only a quarter of Part B's cost. The other three-quarters flows directly into the national debt. According to MedPAC's March 2025 report, 17% of all federal income tax revenue already goes to fund Part B and Part D — and that share is projected to reach 22% by 2030.

GDP isn't really the right benchmark

When economists say Medicare will reach 6.2% of GDP by 2049, that sounds manageable against a $30+ trillion economy. But the government doesn't collect the whole economy. Federal revenue — mostly income taxes, payroll taxes, and corporate taxes — has historically hovered around 16–18% of GDP, rarely cracking 20%. Most economists agree that pushing federal revenue much above 20% of GDP creates significant drag on economic growth, and historically we've never sustained that level outside the post-WWII era. So we can't simply tax our way out.

The more honest question isn't "what share of GDP does Medicare consume?" It's "what share of the federal budget does Medicare consume?" According to CBO and KFF, net Medicare spending already accounts for about 13% of the federal budget — and that's after subtracting premiums beneficiaries pay. As costs grow toward 6.2% of GDP, that share will climb toward 21% or higher — meaning roughly one in five federal dollars goes to a single program. And because the government already spends more than it collects, every dollar of that growth is borrowed.

The GDP framing

Medicare = 6.2% of GDP by 2049
Sounds modest — but you can't tax 100% of GDP. Federal revenue has never exceeded ~20%.

The federal budget framing

Medicare = 13% of federal spending today
Heading toward 21%+. That's one in five federal dollars — on a budget already in deficit.

GDP measures the economy. The federal budget is what the government actually spends — and it's already underwater.

The national debt has crossed 100% of GDP. Net interest payments alone exceeded $1 trillion in recent years — and that interest is itself borrowed, creating a compounding cycle. Medicare's growing claim on general revenue is piled onto a balance sheet that's already deep in the red. The GDP framing creates a false sense of comfort; the federal budget framing reveals the urgency.

Why nothing changes

Part B was designed in 1965 when Medicare covered far fewer services and far fewer people. Today, with 65 million enrollees and an ever-expanding list of covered services — outpatient treatments, clinical drugs, ambulance, diagnostics, and more — the program's claim on general revenue grows every year — and the one structural check that exists has been ignored every time it's been triggered.

The alarm that nobody answers: The Medicare Modernization Act of 2003 created a "funding warning" trigger — if the Trustees determine that general revenue will exceed 45% of total Medicare outlays for two consecutive annual reports, the President is required to submit proposed legislation, and Congress is supposed to consider it on an expedited basis. The trigger has been pulled repeatedly: in the 2007 through 2013 reports and again in the 2018 through 2021 reports. But only one presidential proposal was ever submitted (in response to the 2007 warning), and Congress has never enacted any legislation in response. The alarm exists. It has sounded. No one has answered it.

The inaction cycle

Medicare costs rise

→

Trustees issue funding warning

→

Congress takes no action

→

Treasury borrows to cover the gap

→

National debt grows → repeat

The bottom line

Every debate in this document — site neutrality, doctor pay, managed care, insurer incentives, supplemental benefits — connects back to this underlying reality: Medicare's costs are growing faster than the economy, and the largest piece of that growth is funded by borrowing. Until Congress addresses Part B's open-ended claim on general revenue, the national debt will continue to absorb the difference. This isn't a future problem. It's happening now, in every federal budget, every fiscal year.

Where We're Going

Where Medicare is headed

Across two very different administrations, CMS has been moving Medicare in the same direction: away from fee-for-service, toward value-based care, and under tighter cost controls. The tools and rhetoric differ, but the trajectory has been remarkably consistent. Much of this is still taking shape — but the direction is clear. Understanding where things are headed helps you make smarter choices about your coverage today.

Note: This section describes enacted legislation, current CMS initiatives, and public statements by agency leaders. Policy direction can shift with new administrations, congressional action, or court rulings. It reflects where things stand as of early 2026.

The Biden legacy already in motion

The Inflation Reduction Act of 2022 set in motion the most significant structural changes to Medicare Part D in the program's history. Starting in 2025, enrollees have a hard annual out-of-pocket cap (now $2,100 for 2026), the donut hole has been eliminated, and costs can be spread across monthly payments. The drug price negotiation program scales each year:

2026
10 drugs

→

2027
+15 drugs

→

2028
+15 drugs
Part B eligible

→

2029+
20+/year

These provisions are now law regardless of who is in office, and their impact on drug pricing, plan design, and insurer economics will compound year after year.

The Biden-era CMS also moved to rein in alleged Medicare Advantage marketing abuses. Senate investigations found that insurer payments to agents, brokers, and third-party marketers — including bonuses and fees outside standard CMS-regulated commissions — had nearly tripled to $6.9 billion by 2023. CMS attempted to restructure agent compensation, but a federal court struck down the key provisions in 2024. Other regulatory moves included faster prior authorization requirements for MA plans and site-neutral payment cuts. These reforms laid the groundwork the current administration is now building on.

The Trump administration

"The current system will not work."
— CMS Administrator Dr. Mehmet Oz, HIMSS Global Health Conference, March 2026

Oz's priorities center on technology, deregulation, and accountability. He has pushed agentic AI as a tool for every Medicare beneficiary and championed a $50 billion, five-year Rural Health Transformation Program built on telehealth and AI. On prior authorization, Oz and HHS Secretary Kennedy brokered a voluntary pledge from 12 major insurers in June 2025 to reduce prior auth volume, honor authorizations during plan transitions, expand real-time approvals, and ensure medical professionals review all clinical denials — with a threat of regulation if they don't follow through. Supporters say cutting red tape will accelerate innovation and lower administrative costs; critics worry that less oversight could weaken consumer protections, and that voluntary pledges depend on sustained follow-through.

Original Medicare: paying for outcomes, not volume

CMS is rolling out new payment models designed to replace fee-for-service with outcome-based accountability:

TEAM — mandatory bundled payments

Launched January 1, 2026, TEAM covers five major surgical procedures — including joint replacements, spinal fusions, and coronary artery bypass grafts — in 188 metro areas covering 25% of Medicare beneficiaries. Hospitals receive a target price for the entire episode including 30 days of post-acute care. Beat the target, keep the savings; exceed it, owe money back. It's the clearest signal that CMS views fee-for-service as a system it intends to phase out — not reform.

ACCESS — chronic care outcomes

A voluntary 10-year model launching July 2026 that pays providers recurring fees to manage diabetes, hypertension, chronic pain, and depression — with full payment tied to measurable health improvements, not office visits. Over 150 organizations accepted so far, with rolling applications through 2033.

WISeR — targeting waste and fraud

Running 2026–2031 in six states, WISeR targets specific services with historically high rates of waste and abuse, including skin substitutes, nerve stimulator implants, and knee arthroscopy for osteoarthritis — focusing enforcement where the data shows the most misuse.

Providers: under pressure — and part of the problem

Physicians are the only Medicare provider type without an automatic inflation adjustment. Pay has declined 33% in real terms since 2001, and the one-time 2.5% bump Congress approved for 2026 expires at year's end. The AMA warns Medicare now pays less than practice costs for many physicians.

But providers are also part of the cost problem. Fee-for-service incentivizes volume over value, and a subset of bad actors has exploited it — FFS improper payments totaled $28.8 billion in fiscal year 2025. Even well-intentioned providers face structural incentives to over-order. CMS finalized a new "efficiency adjustment" in 2026 that cuts payments for surgical specialties, radiology, and pathology — signaling it sees overutilization as a problem to address alongside underpayment.

The squeeze is reshaping care delivery. Hospitals acquire physician practices partly because Medicare pays two to four times more for identical outpatient procedures in hospital settings — a payment gap that has driven decades of consolidation. At the other end, concierge and direct primary care sites grew 83% from 2018 to 2023 as physicians exit traditional insurance models. The result:

Large integrated
health systems
47% of physicians

←

Mid-sized
private practice
Shrinking

→

Concierge &
direct primary care
+83% since 2018

Medicare Advantage: tightening the economics

MA payments in 2026 are an estimated $76 billion — 14% — above what the same beneficiaries would cost in Original Medicare. Two forces drive this gap: favorable selection and coding intensity.

Favorable selection is counter-intuitive, so it's worth explaining. Healthier people tend to choose MA — attracted by low premiums and extra benefits — while sicker beneficiaries often stay in or return to Original Medicare for its unrestricted provider choice. But CMS pays MA plans based on what it expects each enrollee would cost. The result: plans get paid for average-cost enrollees who actually cost less. The visual below walks through how this works.

Medicare Advantage pool

Skews healthier
Lower actual costs
Attracted by low premiums, extra benefits

Original Medicare pool

Skews sicker
Higher actual costs
Unrestricted provider choice, no networks

↓
CMS pays MA plans as if their enrollees are average-cost,
but they're actually lower-cost. Plans keep the gap.

Risk adjustment is supposed to correct this — but coding intensity
(documenting more diagnoses) makes enrollees look sicker on paper,
which inflates payments further instead of closing the gap.

The DOJ has pursued fraud and False Claims Act cases against virtually every major carrier, including Cigna ($172M settlement, 2023), a 2025 lawsuit against Aetna, Elevance Health, and Humana for kickback schemes, and an ongoing criminal investigation into UnitedHealth Group that expanded to include Optum and physician reimbursement — a level of scrutiny that goes well beyond civil cases.

"We will not reward risk coding games or rev cycle games."
— Chris Klomp, CMS Director of Medicare, early 2026

"The days of unlimited increases in rate must end."
— Klomp on the 2027 MA rate notice

The 2027 final rate notice excluded diagnoses from unlinked chart review records from risk score calculations — a direct move to curb upcoding. CMS is signaling it intends to bring MA costs closer in line with Original Medicare over time.

The biggest idea: rethinking how people enter Medicare

Perhaps the most consequential signal is Klomp's March 2026 acknowledgment that CMS is studying automatic enrollment of new beneficiaries into either a Medicare Advantage plan or an ACO — rather than the current default of fee-for-service. Beneficiaries would be auto-enrolled into managed care with the option to opt out. It would require congressional approval and remains speculative, but aligns with Project 2025 recommendations and a House bill (H.R. 3467) targeting auto-enrollment by 2028. If implemented, it would fundamentally change Medicare's structure.

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What this means for you

CMS is aggressively overhauling how Medicare dollars are spent, and demanding measurable value in return. Providers and insurers alike are facing tighter reimbursements and higher accountability for outcomes. The plan you enroll in today may look meaningfully different within a few years — I can help you understand what's changing and make sure your coverage still fits.

Call (303) 997-2505 Email Chris

This resource is for educational purposes only and does not constitute legal, financial, or policy advice. Navigate Health Insurance Services is not connected with or endorsed by the United States government or the federal Medicare program.

We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE (1-800-633-4227) to get information on all of your options.