Comprehensive Study Notes: Major Characteristics of U.S. Health Care Delivery

Introduction

  • The United States has a unique health care delivery system compared with other developed countries. Unlike most developed nations, which typically have universal health insurance with government-led coverage, the U.S. expanded insurance through the Affordable Care Act (ACA) but does not achieve universal coverage.
  • Key ongoing challenges: access to health care services and the costs of care at both the individual and national levels.
  • ACA reference: Patient Protection and Affordable Care Act of 2010, amended by the Health Care and Education Reconciliation Act of 2010; commonly known as the Affordable Care Act or Obamacare.

Chapter 1 overview: Major Characteristics of U.S. Health Care Delivery

  • Objective: provide a broad understanding of how health care is delivered in the United States.
  • System description: the U.S. health care delivery system is complex and massive; not a true system, because its components are loosely coordinated, yet it is treated as a system for convenience.
  • Key actors span multiple sectors: educational and research institutions, medical suppliers, insurers, payers, claims processors, and health care providers.
  • Workforce and capacity indicators:
    • Approximately 18.4 million people are employed in health delivery settings (MDs, DOs, nurses, dentists, pharmacists, administrators, etc.).
    • Approximately 451,500 [likely physicians] work in the system.
    • Health care infrastructure includes: 5,686 hospitals, 15,663 nursing homes, ~2,900 inpatient mental health facilities, and 15,900 home health agencies and hospices.
    • Approximately 1,200 programs support basic health services for migrant workers and the homeless, community health centers, black lung clinics, HIV early intervention, and integrated primary care with substance abuse treatment.
  • Training and education: health care professionals are trained in about 192 medical/osteopathic schools, 65 dental schools, 130 schools of pharmacy, and >1,937 nursing programs.
  • Insurance coverage landscape (private vs. public):
    • Private health insurance coverage: 201.1 million Americans, mostly through employers.
    • Public programs (Medicare and Medicaid): 103.1 million covered.
    • Private sector: ~1,000 health insurance companies offer private plans; private managed care sector includes ~452 licensed HMOs and 925 PPOs.
  • Financing and delivery: a multitude of government agencies manage financing, health services research, and regulatory oversight across the system.
  • Public and private financing, private delivery, and a mix of payment models contribute to a system that is not centrally controlled but is heavily regulatory-influenced.

Subsystems of U.S. Health Care Delivery

  • Managed Care
    • Seeks efficiency by integrating basic functions of health care delivery and by controlling utilization and costs.
    • Dominant system in the U.S. today; covers most Americans via private and public insurance through contracts with a Managed Care Organization (MCO) such as an HMO or PPO.
    • Enrollee: individual covered under a managed care plan.
    • Health plan description: the contract between the MCO and the enrollee.
    • Payment to providers: through capitation (fixed payment per enrollee) or discounted fee arrangements; providers may discount services to be in-network and guarantee a patient population.
    • Plans underwrite risk, effectively acting as insurer.
    • Quad-function model (financing, insurance, delivery, payment) is integrated to varying degrees in managed care.
    • Figure 1.1 illustrates integration of these functions in a managed care context.
  • Military health care system
    • Available mostly free for active-duty personnel (Army, Navy, Air Force, Coast Guard) and certain uniformed services (Public Health Service, NOAA).
    • Comprehensive preventive and treatment services; delivered by salaried health care personnel.
    • Basic services at dispensaries, sick bays, first aid stations, clinics; advanced care at regional military hospitals.
    • Dependents and retirees may be treated at military facilities or covered by TriCare, funded by the U.S. Department of Defense.
  • Veterans Administration (VA) health care system
    • Available to retired veterans with prior military service; priority to those with disabilities.
    • Focus: hospital care, mental health services, and long-term care.
    • One of the largest and oldest formally organized health care systems (since the 1930s).
    • Serves >9.6 million individuals at >1,100 sites (hospitals, clinics, nursing homes, counseling centers, domiciles, home health, etc.).
    • Budget >$55 billion; ~280,000 staff in 2010.
    • Organization into 21 geographically distributed Veterans Integrated Service Networks (VISNs).
  • Subsystem for Special Populations (vulnerable populations)
    • Populations with health needs but limited resources: poor/uninsured, certain minorities or immigration status, geographically/economically disadvantaged.
    • Access care primarily through safety nets: Medicare/Medicaid, community health centers (CHCs), migrant health centers, free clinics, hospital ERs.
    • Safety net providers offer comprehensive medical and enabling services (language assistance, transportation, nutrition/education, social support, childcare).
    • Federally Qualified Health Centers (FQHCs) support CHCs; government funding via the Bureau of Primary Health Care (BPHC) within HRSA, DHHS.
    • 2012 data: CHCs served 22 million people across 8,100 service sites; 83.8 million patient visits; about 93% lived at income <200% of the federal poverty level; ~36% uninsured.
    • Role in improving outcomes for uninsured/Medicaid populations and reducing disparities.
    • Medicare and Medicaid expansions under ACA.
    • CHIP (Children’s Health Insurance Program): established 1997 to insure children in uninsured families; 2014 spending ~$13B to cover ~8.1 million children.
  • Integrated Systems (IDS) and Accountable Care
    • IDSs: networks of providers and organizations that coordinate care for a defined population and are accountable for clinical outcomes and health status.
    • Goals: ownership/partnership with hospitals, physicians, insurers to deliver a coordinated range of services.
    • ACA promotes payment reform encouraging physician-hospital integration and service coordination.
    • Medical Home/Health Home concept: integrated, comprehensive, coordinated, continuous care with a focus on primary care and population health accountability.
    • Principles for vulnerable populations: emphasis on primary care, coordination of behavioral, social, and public health services, and accountability for population health outcomes.
  • Long-Term Care Delivery (LTC)
    • LTC includes medical and nonmedical care for people with chronic health issues or disabilities preventing daily tasks.
    • Delivered across homes, assisted living, nursing homes; family members/friends provide much of LTC informally.
    • Medicare does not cover LTC; costs fall to families or private LTC insurance (often unaffordable).
    • Medicaid covers some LTC services but requires indigent status.
    • Projections: by 2020, >12 million Americans estimated to require LTC, stressing public and private resources.
  • Public Health System
    • Mission: improve and protect community health.
    • IOM’s Future of Public Health in the 21st Century advocates for a stronger public health infrastructure and population-based health approach.
    • National Public Health Performance Standards Program lists 10 essential public health services:
    1. Monitor health status to identify and solve community health problems
    2. Diagnose and investigate health problems and hazards
    3. Inform, educate, empower people about health problems and hazards
    4. Mobilize the community to identify and solve health problems
    5. Develop policies and plans to support individual and community health
    6. Enforce laws and regulations to protect health and safety
    7. Provide people with access to necessary care
    8. Assure a competent and professional health workforce
    9. Evaluate effectiveness, accessibility, and quality of health services
    10. Perform research to discover innovative health solutions
    • 2009 public health expenditures: ~3.1% of total U.S. health expenditures (~$2.5 trillion).
    • Public health funding varies by state; ACA established the Prevention and Public Health Fund to expand prevention/investments in public health and health care quality.
    • Ongoing focus areas: antibiotic resistance, obesity/heart disease, prescription drug overdose, chikungunya, e-cigarettes; emphasis on advanced information systems and data sharing.

Characteristics of the U.S. Health Care System (Exhibit 1.1)

  • Ten distinguishing characteristics:
    • No central governing agency and little integration/coordination
    • Technology-driven delivery system focusing on acute care
    • High costs with unequal access and variable outcomes
    • Delivery under imperfect market conditions
    • Government as a subsidiary to the private sector
    • Fusion of market justice and social justice
    • Multiple players with a balance of power
    • Quest for integration and accountability
    • Access to services selectively based on insurance coverage
    • Legal risks influence practice behaviors

No Central Governing Agency; Little Integration and Coordination

  • The U.S. system is not centrally controlled; financing is mixed (public and private).
  • Private financing accounts for about 57% of total health care expenditures; government finances the remaining 43%.
  • Centrally controlled systems (in other countries) use global budgets and have tighter control of utilization; the U.S. relies on a large private infrastructure with government oversight for public programs like Medicaid/Medicare, standards of participation, and certification as minimum quality standards.

Technology-Driven Delivery; Focus on Acute Care

  • U.S. is a hub of medical technology research and innovation.
  • Growing technology demand can outpace financing resources; other factors include patient demand for the latest innovations and hospital competition for modern equipment.
  • Providers may face legal risks influencing technology adoption; overuse can raise costs and impact population health outcomes.
  • Emphasis on high-technology care may detract from primary care and public health value, despite primary care and public health often yielding better population-level outcomes at lower cost.

High Cost, Unequal Access, and Average Outcomes

  • U.S. spending: highest among developed countries; health care expenditures amounted to about GDP imes 0.169 (approximately 16.9% of GDP in 2012).
  • Access is uneven; uninsured rates declined after ACA implementation but remain a challenge.
    • Uninsured fell from about 16\% to 12\% in 2014 after ACA expansion.
  • Access determinants include:
    • Insurance coverage via employment, government programs (ACA), private funds, or safety-net providers
    • Some physicians do not accept new Medicaid patients (approximately one-third in 2012), creating access barriers for low-income populations.
    • Uninsured individuals may delay care and utilize hospital emergency departments for acute issues, with costs shifted to those who can pay or to the system as a whole.
  • Public and private sector interplay creates cost containment challenges; access is improved for some but not universal for all.

Free Markets and Price Transparency Challenges

  • In a typical free market, price/quality information would enable consumer choice, but health care pricing is opaque and fragmented.
  • Hidden costs: ancillary services (anesthesiology, pathology, facility charges) are often billed separately, making total costs unclear before service delivery.
  • Bundled approaches include:
    • Package pricing: bundled services for a single episode (less comprehensive than full capitation)
    • Capitation: a fixed payment per enrollee for a year covering all services
  • Moral hazard: insurance coverage leads to higher utilization of services, including routine care (e.g., colds, coughs, earaches) that insurance pre-pays for.
  • Need vs price-based demand: utilization is often determined by clinical need rather than price signals; provider-induced demand can create additional utilization when providers have financial incentives.

Government as Subsidiary to the Private Sector

  • In many other developed countries, government plays a central role in financing and delivery; in the U.S., private sector dominates.
  • Government finances safety nets and fills gaps (public health, research, training, and care of vulnerable populations) rather than being the primary service provider.

Fusion of Market Justice and Social Justice

  • Market justice: fair distribution based on willingness/ability to pay; private responsibility predominates.
  • Social justice: society’s well-being takes priority; lack of resources to obtain care is unjust.
  • The U.S. blends both, with employer-sponsored insurance for many workers and government programs for the poor/elderly; ACA attempts to broaden coverage, though full reform remains incremental.

Multiple Players and Balance of Power

  • Key players include physicians, hospital administrators, insurers, large employers, and government bodies.
  • Powerful special-interest groups and lobbying influence health policy.
  • Divergent financial interests between providers (maximize reimbursement) and the government (contain costs) create countervailing forces that can hinder comprehensive reform but prevent single-entity dominance.

Quest for Integration and Accountability

  • Current emphasis on using primary care as the organizing hub for continuous, coordinated care.
  • Integrated delivery systems (IDS) and the medical home/health home concepts aim to deliver comprehensive, coordinated services with accountability for outcomes.
  • Accountability spans providers (quality and efficiency) and patients (responsible use of resources).

Access to Health Care Selectively Based on Insurance Coverage

  • High-quality health care is not universally accessible; access depends on insurance coverage or affordability.
  • Safety-net access includes safety-net providers, emergency departments, and public programs.
  • EMTALA (1986): requires screening and stabilization for any patient, regardless of ability to pay.
  • Despite ACA reductions in uninsured rates, access barriers persist for the uninsured and underinsured; emergency department use continues to shift costs to payers.

Legal Risks and Practice Behavior

  • Higher malpractice risk leads to defensive medicine (additional tests, documentation) that can increase costs.
  • Defensive medicine contributes to inefficiency and elevated costs in the system.

Health Care Systems of Other Developed Countries

  • Three basic models in Western Europe and Canada:
    • Canada: government finances health care through general taxes; care delivered by private providers; tighter consolidation of financing/insurance/payers under government; delivery is private.
    • Germany: financed by employer-employee contributions; private not-for-profit sickness funds collect contributions and pay physicians/hospitals; insurance and payment closely integrated; government exercise overall control; private delivery.
    • United Kingdom: government manages infrastructure and finances tax-supported national health insurance; most medical institutions government-operated; providers may be government employees or tightly integrated in public networks.
  • Canada: 2004 10-Year Plan to Strengthen Health Care aimed to integrate primary care; 2007 ~75% of family physicians worked in physician-led, multiprofessional practices; ~60% of primary care physicians used computerized medical records by the early 2010s; 2014 Canada Health Transfer funding per-capita to improve equity; price-reduction efforts for generics (Ontario: 25% of brand price; BC: 20% in 2014).
  • Germany: General Law on Patients’ Rights (2013); 2014 long-term care reform to support home care and increase caregiver numbers by ~20%; 2015 reform to adjust Social Health Insurance contributions; Institute for Quality Assurance and Transparency in Health Care; changes to contribution rates and financing structure.
  • United Kingdom: Health and Social Care Act (2012) reformed NHS purchasing and regulation; establishment of clinical commissioning groups (CCGs) to plan and purchase services; NHS England oversees CCGs; reforms aimed at greater autonomy for hospitals and transparency in public accountability; complex evaluation of reform outcomes.
  • Table 1.1: Health care system comparisons across the United States, Canada, United Kingdom, and Germany (selected indicators):
    • Type: Pluralistic (US), National health insurance (Canada), National health system (UK), Socialized health insurance (Germany)
    • Ownership: Private (US), Public/private (Canada), Public (UK), Private (Germany)
    • Financing: Multipayer (US), Single-payer/general taxes (Canada/UK), Mandatory payroll contributions/general taxes (Germany)
    • Reimbursement schemes: DRGs, negotiated fee-for-service, per diem, capitation (US); Global budgets (Canada/UK/Germany)
    • Consumer cost-sharing: Small to significant (US), Negligible (Canada/UK/Germany)
    • Health outcomes indicators (selected): Life expectancy for women, infant mortality, expenditures as % of GDP ($GDP)
    • Life expectancy for women: US 78.7, Canada 81.5, UK 81.0, Germany 81.0
    • Infant mortality per 1,000 births: US 6.1, Canada 4.8, UK 4.1, Germany 3.3
    • Expenditures as % of GDP: US 16.9, Canada 10.9, UK 9.3, Germany 11.3
    • Data source: OECD Health Data, 2014 (Health Glance 2013); accessed 2015

Systems Framework (Overview of how the health system is organized)

  • A system is a set of interrelated and interdependent components designed to achieve common goals, with logical coordination among components.
  • Core elements in the U.S. health system model:
    • System inputs (resources)
    • System structure
    • System processes
    • System outputs (outcomes)
    • System outlook (future directions)
  • System Foundations: historical, cultural, social, and economic factors shape the current structure.
  • System Resources (Inputs):
    • Human resources: health care providers (physicians, nurses, dentists, pharmacists, allied health professionals) and support staff (billing, marketing, maintenance).
    • Nonhuman resources: technology and its effects; financing and reimbursement methods.
    • Health care managers to coordinate and manage services.
  • System Processes: continuum of care spanning outpatient and primary care, hospitals, managed care, IDSs, LTC, and populations with special health needs.
  • System Outputs (Outcomes): cost, access, and quality are the main criteria for evaluating success; these drive reform through health policy.
  • System Outlook: dynamic, forward-looking direction to achieve desired outcomes amid social, cultural, and economic forces of change.

Foundations and Definitions (Chapter 2: Foundations of U.S. Health Care Delivery)

  • Health concepts and models
    • Medical/biomedical model: health defined as absence of illness; focus on diagnosis and intervention; prevention often relegated to secondary status.
    • Sociological perspective (Parsons): health as the ability to perform social roles; sick role concept; disease may be present even if social obligations are maintained due to pain or distress.
    • SAEM definition (1992): health as a state of physical and mental well-being that enables achievement of individual and societal goals.
    • WHO definition (1948): health as complete physical, mental, and social well-being; not merely absence of disease; health system defined as activities aimed at promoting, restoring, or maintaining health; emphasizes biopsychosocial model.
    • Holistic health: comprehensive health including physical, mental, social, and spiritual dimensions; could include spiritual or religious dimensions as well.
  • Illness vs. disease distinction
    • Illness is subjective, based on personal perception; disease is a medical diagnosis confirmed by a professional.
    • Example: hypertension can be asymptomatic (disease present without illness).
    • Someone may feel ill without an identifiable disease.
  • Acute vs. chronic conditions
    • Acute: severe, episodic, short duration; often treatable and recoverable.
    • Chronic: long-lasting, potentially ongoing management.
  • Indicators of health (Exhibit 2.1)
    • Self-reported health status
    • Life expectancy
    • Morbidity (disease burden)
    • Mental well-being
    • Social functioning
    • Functional limitations
    • Disability
    • Spiritual well-being

Summary of Key Concepts and Implications

  • The U.S. health care system is characterized by fragmentation and patchwork, with multiple subsystems and a mix of public/private financing and delivery.
  • Integration and accountability are central policy ambitions (IDS/ACO models) to improve cost-effectiveness and outcomes.
  • Access is uneven and heavily contingent on insurance coverage, with safety nets playing a crucial role for vulnerable populations.
  • High technology and market dynamics influence practice patterns and costs; strong emphasis on innovation but concerns about efficiency and primary care emphasis remain.
  • Comparative systems (Canada, UK, Germany) illustrate different configurations of financing, delivery, and government involvement, highlighting trade-offs in access, cost, and quality.
  • Public health investments and prevention (via the ACA Prevention Fund) are recognized as essential for population health and long-term cost containment.

Notable Formulas and Statistics (LaTeX format)

  • Health care expenditure share of GDP (2012): ext{Expenditure share}_{US} = 0.169 imes ext{GDP}
  • ACA impact on uninsured (illustrative): ext{Uninsured}_{2014}
    ightarrow 12\% \text{(from } \approx 16\%\text{)}
  • Life expectancy and infant mortality (Table 1.1):
    • Life expectancy (women): LE_{ ext{women}}( ext{US}) = 78.7 \text{years}; Canada 81.5, UK 81.0, Germany 81.0
    • Infant mortality per 1,000 births: IMR_{ ext{US}} = 6.1; Canada 4.8, UK 4.1, Germany 3.3
  • Health system shares and indicators (Table 1.1):
    • Financing structures: ext{US: multipayer} \text{Canada: single-payer (general taxes)} \text{UK: general taxes} \text{Germany: payroll contributions + general taxes}
    • Expenditure as % of GDP: ext{US} = 16.9\% , \text{Canada} = 10.9\% , \text{UK} = 9.3\% , \text{Germany} = 11.3\%

Connections to Foundations and Real-World Relevance

  • The quad-function model (financing, insurance, delivery, payment) provides a framework to analyze how policy changes (e.g., ACA) affect costs, access, and quality via different levers.
  • IDSs and Accountable Care Organizations (ACOs) reflect the policy shift toward value-based care and coordinated delivery, with the ACA promoting payment reform to align incentives.
  • The public health fund and prevention priorities under the ACA signal a recognition that population health investment reduces long-term costs and improves outcomes.
  • The debate between market justice and social justice underpins policy tensions around universal coverage, affordability, and the role of government in health care.
  • Access disparities persist even with insurance coverage, underscoring the importance of safety-net capacity, provider availability, and affordability of care.

Practical Implications and Ethical Considerations

  • Ethical tension between patient autonomy and cost containment; the right to access vs. fiscal sustainability.
  • Practical challenge of achieving universal access in a system with a large private sector and fragmented governance.
  • The role of primary care as a gatekeeper and coordinator of care to improve efficiency and outcomes while managing costs.
  • The need for transparent pricing and better information for consumers to make informed health care choices.
  • The importance of data sharing and robust public health infrastructure to detect and respond to health threats and improve population health.

Connections to Other Chapters (Systems Framework)

  • Chapter 4: Health care providers and professionals (human resources)
  • Chapter 5: Technology and its effects (nonhuman resources/technology)
  • Chapter 6: Financing and Reimbursement Methods (financing and payment)
  • Chapter 7–11: Continuum of care (outpatient, hospitals, managed care, LTC, special populations)
  • Chapter 12: Cost, Access, and Quality (system outcomes)
  • Chapter 13: Health Policy (change and reform)
  • Chapter 14: The Future of Health Services Delivery (system outlook)

Exhibit/Summary References (for context)

  • Exhibit 1.1: Main Characteristics of the U.S. Health Care System (10 items listed above)
  • Table 1.1: Health Care Systems of Selected Industrialized Countries (US, Canada, UK, Germany) with typologies, financing, and key indicators
  • Exhibit 2.1: Indicators of Health (Self-reported health status, life expectancy, morbidity, mental well-being, etc.)

Quick Recap for Exam Preparation

  • Understand the quad-function model and how managed care aims to integrate financing, insurance, delivery, and payment.
  • Be able to describe subsystems: managed care, military/VA, safety-net for vulnerable populations, integrated systems/IDSs, long-term care, and public health.
  • Articulate the major distinctions of the U.S. system (no central governance, technology focus, high cost with uneven access, government as subsidiary, mix of market and social justice, multiple actors, integration efforts, and access linked to insurance).
  • Compare U.S. health care with Canada, the UK, and Germany in terms of financing, delivery, and outcomes; recall key indicators from Table 1.1 (life expectancy, infant mortality, and GDP expenditure share).
  • Master the systems framework (foundations, resources, processes, outputs, outlook) and how it applies to understanding health care delivery.
  • Recall foundational health definitions (biomedical and biopsychosocial models), illness vs. disease, and the roles of prevention and health promotion.