There are basically two kinds of capitation models: “Global Capitation” and “Partial" or "Blended Capitation”. Each can be applied in various scenarios. Under global capitation, whole networks of hospitals and physicians band together to receive single fixed monthly payments for enrolled health plan members. Payment is made on a per member basis. Generally, providers sign a single contract with a health plan to cover the care of groups of members, and then must determine a method of dividing up the capitated check among the provider group. Under a partial or blended capitation model, a single payment is made for a defined set of services, while other services involved in a patient’s care are paid for on a fee-for-service basis. Under each model of capitation, risk adjustment is essential to adequately compensate providers for the risk they take-on. Payments are differentiated based on the characteristics of the enrollees in each provider patient group. Common risk adjustment factors include age, sex, health status, and prior health care utilization, as well as socio-demographic factors such as residence, income, etc.
Global Capitation: A global capitation model is applicable in a health maintenance organization (HMO) structure. The HMO is paid a specified amount per patient to deliver services over a set period of time. Usually the payment is determined on a per member/per month (PMPM) basis. The rates are generally calculated form projections of the services and costs of the provider’s patient population, based on historic costs. The payments vary to reflect the total number of patient for a provider and the demographic and acuity factors of the patient population. In some cases, co-payments may also be collected from embers for certain services. Under global capitation all care is covered under the fee including primary care, hospitalizations, specialist care and ancillary services.
Partial or Blended Capitation: Under partial or blended capitation models, only certain types or categories of services are paid on a capitated basis. Typical scenarios under which partial capitation applies include primary care capitation where a capitation amount is paid to primary care practices for primary care services and in some cases, ancillary services provided under the direction of the primary care practice. Alternatively, specialists may be paid on a capitated basis for services they provide while the primary care services are paid fee-for-service. Other “carve-out” capitation arrangements may involve paying for certain care such as mental health on a capitation basis. This differs from episode-based payment in that all the services included to care for a patient by the mental health provider are covered.
Partial capitation models are also being considered under accountable care organizations (ACOs) whereby the ACO would be at financial risk for some but not all of the items and services it provides. Section 3022 of the Patient Protection and Affordable Care Act created a new Medicare payment program to support Accountable Care Organizations. Section 10307 of the Act allows HHS and CMS to use payment models such as partial capitation to support ACOs. http://www.chqpr.org/downloads/PartialCapitationPaymentforACO.pdf