Fee-for-Service

Fee-for-service links provider revenue directly to the number and type of separately billable services delivered. This page explains how the payment is calculated, how claims and fee schedules determine payment, which incentives the method creates, how financial risk is distributed, and how fee-for-service differs from other provider payment methods.

How fee-for-service payment works

Under fee-for-service, each eligible consultation, test, procedure or other service is treated as a separate unit of payment. The provider records the service, submits a claim or invoice, and receives the applicable amount if the service meets the purchaser’s coverage, coding and billing rules.

A typical fee-for-service process follows these steps:

1. Deliver the service: The provider delivers a consultation, investigation, procedure or other covered service.
2. Record the service: The provider documents the service using the required clinical and billing information.
3. Assign the billing code: The service is matched to a code in the applicable classification or fee schedule.
4. Submit the claim: The provider submits the coded service to the purchaser for payment.
5. Adjudicate the claim: The purchaser checks eligibility, coverage, coding, duplication and other payment rules.
6. Calculate the payment: The purchaser applies the permitted fee and any adjustments, cost sharing or payment limits.
7. Pay or reject the claim: The approved amount is paid, reduced or denied according to the payment rules.

The amount billed by a provider is not always the amount ultimately paid. Many systems use an administratively determined or contractually agreed fee schedule that establishes the permitted payment for each service.

How the payment is calculated

Total fee-for-service payment depends on the number of eligible services delivered and the payment rate assigned to each service. The calculation may include many service categories, each with its own quantity and rate.

[ P_{\mathrm{FFS}}=\sum_{j=1}^{m} q_j r_j ]

where:

• (P_{\mathrm{FFS}}) is the total fee-for-service payment.
• (q_j) is the number of eligible units of service (j).
• (r_j) is the approved payment rate for one unit of service (j).
• (m) is the number of different service categories included in the claim or payment period.

Payment therefore increases when more separately payable services are delivered, when the service mix shifts towards higher-paid activities, or when the applicable fee rates increase.

Worked example

Consider a provider delivering consultations, blood tests and minor procedures during one payment period. The figures are illustrative and do not represent recommended payment rates.

Service	Quantity	Fee per service	Payment
Consultations	120	£45	£5,400
Blood tests	40	£12	£480
Minor procedures	15	£85	£1,275
Total			£7,155

The total payment is calculated as:

[ (120 \times £45)+(40 \times £12)+(15 \times £85)=£7{,}155 ]

If the provider delivers one additional eligible consultation, revenue increases by the consultation fee, subject to the purchaser’s billing and coverage rules.

Why fee-for-service changes provider incentives

Fee-for-service gives providers positive marginal revenue for each additional payable service. This can encourage activity, responsiveness and the availability of services because additional work can generate additional revenue.

The behavioural effects are not automatic. Clinical need, professional standards, patient preferences, workforce capacity, regulation and claim-review arrangements also affect which services are delivered.

• Fee-for-service can encourage providers to increase the volume of separately payable services.
• Fee-for-service can support access when providers have the capacity and financial incentive to deliver additional care.
• Fee-for-service may encourage the substitution of higher-paid services for lower-paid alternatives.
• Fee-for-service may discourage activities that are poorly paid or not separately billable, such as coordination, prevention or communication between providers.
• Fee-for-service can contribute to fragmented care when each service is paid separately without shared accountability for an episode or patient population.
• Fee-for-service may increase expenditure when service volume grows without corresponding improvements in patient outcomes.

How fee-for-service distributes financial risk

Fee-for-service places much of the financial risk associated with service volume on the purchaser. When more payable services are delivered, the purchaser’s expenditure generally increases.

The provider still carries other risks, including the cost of delivering each service, denied claims, incomplete documentation and fee rates that do not cover efficient production costs.

Type of risk	Main risk holder under fee-for-service
More services are used than expected	Purchaser
The cost of delivering a service exceeds its fee	Provider
A submitted claim does not meet payment rules	Provider
The service mix shifts towards higher-paid activities	Purchaser
The total number of claims increases	Purchaser

Risk allocation can change when fee-for-service is combined with expenditure caps, utilisation controls, quality adjustments or shared-savings arrangements.

How fee schedules affect payment

A fee schedule lists the amount payable for each covered service or billing code. Rates may be administratively set, negotiated between purchasers and providers, or calculated using information about time, skill, practice costs, capital requirements or relative resource use.

The design of the fee schedule can influence the service mix as well as total expenditure. Large differences between rates may encourage providers to favour highly paid services, while inadequate rates may reduce participation or access.

Important fee-schedule decisions include:

• The service categories that may be billed separately.
• The coding and documentation required for payment.
• The relative payment assigned to different services.
• Adjustments for geography, provider type, setting or patient complexity.
• Rules governing multiple services delivered during the same encounter.
• The frequency and method used to update payment rates.
• Limits, exclusions and conditions affecting eligibility for payment.

How fee-for-service differs from other payment methods

Fee-for-service pays for individual services rather than assigning one payment to a person, episode, organisation or period. This distinction changes the relationship between activity, provider revenue and financial risk.

Payment method	What triggers payment	Effect of delivering one more service
Fee-for-service	Each eligible service	Payment normally increases
Capitation	Each enrolled person for a period	Payment does not normally increase
Bundled payment	A defined episode of care	Payment does not normally increase for each service within the episode
Salary	Employment for a defined period	Salary does not normally increase
Global budget	An agreed provider or system budget	Total payment does not normally increase

No method eliminates every undesirable incentive. Purchasers often combine methods to balance access, activity, coordination, quality and expenditure control.

How fee-for-service can be modified

Health systems frequently retain fee-for-service while modifying how it operates. These changes can reduce undesirable incentives or preserve payment for selected services that might otherwise be underprovided.

Common modifications include:

• A fee schedule can limit or standardise the amount paid for each service.
• Prior authorisation can require approval before selected services become payable.
• Utilisation review can identify unusual patterns of service volume or coding.
• Expenditure caps can limit the purchaser’s total financial exposure.
• Quality adjustments can link part of payment to access, processes or outcomes.
• Shared-savings arrangements can reward providers when spending remains below an agreed benchmark while quality conditions are met.
• Blended payment can combine fee-for-service with capitation, salary, bundled payment or fixed capacity funding.
• Selective fee-for-service can preserve activity incentives for services considered at risk of under-provision.

Adding controls can also increase administrative burden and delay payment. Each modification should therefore have a clear purpose and be assessed for unintended effects.

What good fee-for-service design must consider

A fee-for-service system needs clear service definitions, defensible payment rates and reliable claims administration. Purchasers must also monitor whether the payment rules support appropriate care rather than simply generating more billable activity.

Important design questions include:

• Are separately billable services clearly defined?
• Do payment rates reflect the resources required for efficient delivery?
• Could providers increase revenue through unnecessary volume, coding changes or service substitution?
• Are prevention, care coordination and non-procedural work recognised adequately?
• Can the purchaser detect duplicate, inappropriate or fraudulent claims?
• Are payment rules understandable and administratively proportionate?
• Does the system monitor access, quality, outcomes and expenditure alongside activity?
• Could payment rules disadvantage providers serving patients with greater needs?

Common misunderstandings

Fee-for-service describes the unit and method of provider payment. It does not, by itself, determine who finances the care, whether the patient pays directly or whether the service is publicly or privately funded.

• Fee-for-service does not necessarily mean that the patient pays the provider directly.
• Fee-for-service is not the same as a provider’s listed charge because the purchaser may apply an approved fee schedule.
• Fee-for-service does not guarantee that every delivered service will be paid because coverage, coding and documentation rules still apply.
• Fee-for-service is not inherently the same as private healthcare because public programmes can also use fee-for-service payment.
• Fee-for-service does not prove that care was unnecessary merely because additional activity generated additional revenue.
• Fee-for-service does not measure quality, outcomes or value unless separate payment rules explicitly incorporate them.