The core difference
The difference comes down to what gets paid for. Under fee-for-service, every visit, test, image, and procedure is billed and reimbursed separately, so revenue rises with the volume of services. Under value-based care, payment is tied to outcomes, quality, and the total cost of caring for a patient or population, so the reward is for keeping people healthy and managing care efficiently. The first rewards how much you do; the second rewards how well your patients do.
How fee-for-service pays
Fee-for-service is the legacy default. A provider performs a service, submits a claim with the corresponding code, and is paid a set fee. The model is simple to administer and well suited to one-off, transactional care, but it rewards volume rather than outcomes, does not pay for care coordination, and leaves the payer, Medicare or the insurer, holding the cost risk. More services mean more revenue regardless of whether the patient improves.
How value-based care pays
Value-based care ties payment to performance against a spending benchmark and a set of quality measures. Providers and ACOs take on risk: upside-only models let them share in savings, while two-sided models require them to repay losses if costs exceed the benchmark. The arrangements span a continuum, from pay-for-performance bonuses layered on fee-for-service, to shared savings, to bundled payments, to full capitation. The further along the continuum, the more financial risk the provider holds.
Fee-for-service vs value-based care, side by side
| Dimension | Fee-for-service | Value-based care |
|---|---|---|
| Payment unit | Per discrete service | Per outcome or population |
| Who bears financial risk | The payer | The provider, partly or fully |
| Provider incentive | Do more | Keep people well and out of the hospital |
| Data demands | Clean coding and billing | Population analytics, risk adjustment, quality reporting, care-gap tracking |
| Patient experience | Reactive, episodic | Proactive, coordinated, preventive |
| Examples | Traditional Medicare claims | MSSP ACOs, ACO REACH, Medicare Advantage, capitation |
Is fee-for-service going away?
Not soon, and not entirely. As of 2023, roughly 55% of U.S. health care payments still ran through fee-for-service-based arrangements, and most value-based contracts are still built on an underlying fee-for-service billing chassis. Even an MSSP ACO bills fee-for-service in real time and reconciles against a benchmark afterward. Only full population-based payment truly leaves fee-for-service behind. The trajectory is clearly toward value, with CMS aiming for every Traditional Medicare beneficiary in an accountable care relationship by 2030, but fee-for-service remains the default plumbing for now.
Does value-based care work?
The evidence is maturing. In 2024 the Medicare Shared Savings Program saved Medicare about $2.4 billion, a program record, with 75% of ACOs earning performance payments and ACOs outperforming comparable groups on nearly all quality measures. The savings have historically been concentrated among physician-led and lower-revenue ACOs, which suggests the operating model, not just scale, drives results.
The real-world answer: most practices do both
The honest answer to "which model" is that most organizations run both at once, billing fee-for-service for much of their volume while participating in one or more value-based contracts, often for the same patients under different payers. That straddle is the source of the administrative burden: two reporting worlds, attribution churn, and reconciliation lag. Running fee-for-service billing alongside value-based care's population analytics, risk adjustment, quality reporting, and gap closure is exactly the dual workload that value-based care operations have to absorb.