Activity-Based Funding

Activity-Based Funding
Name	Activity-Based Funding
Type	Health care financing model
Introduced	20th century
Purpose	Hospital and provider reimbursement based on activity
Regions	International

Activity-Based Funding

Activity-Based Funding (ABF) is a health care financing approach that allocates resources to hospitals and providers according to the volume, type, and complexity of clinical services delivered. It contrasts with block grants and salary-based systems by linking payments to episodes, procedures, and patient classifications, and has influenced reforms in multiple jurisdictions including Australia, England, Canada, New Zealand, and parts of the United States. Proponents argue ABF enhances transparency, efficiency, and accountability; critics raise concerns about incentives, coding practices, and equity.

Overview

ABF emerged amid financing reforms influenced by Diagnosis-related group systems, Case Mix measurement, and purchaser-provider splits advocated by figures associated with New Public Management, World Health Organization, and national agencies like Australian Institute of Health and Welfare. Early implementations drew on work from Robert Fetter and John Thompson (economist), informed by experiments in United States hospitals, United Kingdom reforms such as the National Health Service internal market debates, and policy diffusion across Canada, New Zealand, and Netherlands. Policymakers in European Commission consultations and multilaterals including the Organisation for Economic Co-operation and Development analyzed ABF impacts on hospital behavior, length of stay, and case mix index.

Methodology and Components

Key methodological components include classification systems like Diagnosis-related group and Healthcare Resource Groups, costing frameworks developed by institutions such as Institute for Healthcare Improvement, and price-setting mechanisms overseen by agencies like NHS England and the Independent Hospital Pricing Authority. Core elements are clinical coding standards exemplified by International Classification of Diseases editions, activity measurement methods used by Australian Commission on Safety and Quality in Health Care, and reimbursement schedules akin to tariffs produced by Centers for Medicare & Medicaid Services. Supporting infrastructure often involves electronic records from vendors such as Cerner Corporation and Epic Systems Corporation, and analytics from research bodies like RAND Corporation and Commonwealth Fund.

Implementation and Variants

Variants of ABF include prospective bundled payments, retrospective cost reconciliation models, hybrid global budgets with activity floors, and pay-for-performance overlays used in programs like Medicare demonstration projects, Payment by Results in England, and casemix funding in Victoria (Australia). Implementation actors range from national ministries such as Department of Health and Human Services (United States) and Department of Health and Social Care (United Kingdom) to regional purchasers like Local Health Integration Network and state health authorities including New South Wales Ministry of Health. Countries have adapted ABF using local classifications like Australian Refined Diagnosis Related Groups and international tools such as Diagnosis Related Group (DRG) Grouper software maintained by vendors and research teams at University of Melbourne and Harvard University.

Impacts and Evaluation

Empirical evaluations conducted by organizations including World Bank, OECD, Australian Institute of Health and Welfare, and academic centers at University of Toronto and London School of Economics report mixed outcomes: reductions in length of stay in Scotland and increased procedure volumes in Ontario, while studies from New Zealand highlight shifting of care to outpatient settings. Metrics often assessed are hospital-acquired complication rates tracked by Agency for Healthcare Research and Quality, readmission indices monitored by Centers for Medicare & Medicaid Services, and cost-effectiveness analyses published in journals from Wiley-Blackwell and Oxford University Press affiliates. Evaluations by National Audit Office (UK) and Australian National Audit Office examine governance, data quality, and unintended consequences such as upcoding documented in case studies from Germany and Spain.

Challenges and Criticisms

Critiques from scholars at Johns Hopkins University, University of Oxford, and policy groups like Health Action International focus on perverse incentives including patient selection, premature discharge, and coding inflation observed in systems reviewed by Transparency International and audited by Public Accounts Committee (UK). Equity concerns are raised by advocates linked to Amnesty International and academic analyses comparing rural hospitals in Alberta and urban tertiary centers in New South Wales Ministry of Health regions. Legal and regulatory tensions involve procurement rules overseen by bodies such as European Court of Justice in cross-border contexts and labor relations mediated by unions like Australian Nursing and Midwifery Federation and Royal College of Nursing.

International Adoption and Case Studies

Notable case studies include the national rollout in Australia coordinated with the Independent Hospital Pricing Authority, the Payment by Results program in England managed by NHS England, DRG-based reimbursement in Germany under the Institute for the Hospital Remuneration System (InEK), Ontario’s casemix programs administered by Canadian Institute for Health Information, and bundled-payment pilots in United States Medicare accountable care organizations associated with Centers for Medicare & Medicaid Services innovation models. Comparative work by OECD and World Bank summarizes cross-national lessons, while academic case studies at University of Melbourne, London School of Hygiene & Tropical Medicine, and McMaster University document contextual adaptations, scaling challenges, and governance reforms.

Category:Health care financing