Medical necessity: do we need it?

Area of Science:

• Health Services Research
• Healthcare Policy
• Medical Economics

Background:

• The concept of "medical necessity" has been a long-standing, yet often undefined, component of health insurance plans for over three decades.
• Recent healthcare reform debates and legal challenges concerning experimental treatments have brought the definition and application of medical necessity into public and professional discourse.

Purpose of the Study:

• To summarize the historical trajectory and evolution of the term "medical necessity" within insurance frameworks.
• To analyze how national healthcare reform initiatives have engaged with the concept of medical necessity.
• To propose a redefinition of medical necessity suitable for a dynamic and evolving healthcare delivery landscape.

Main Methods:

• Historical analysis of the term "medical necessity" in insurance policies and legal contexts.
• Review of literature and policy documents related to healthcare reform and medical necessity.
• Examination of the shift in control over medical necessity definitions from physicians to insurance administrators.

Main Results:

• The term "medical necessity" has transitioned from a physician-controlled insurance concept to a tool for rationing care by insurance administrators.
• The historical evolution reveals a complex interplay between clinical judgment, insurance practices, and administrative control.

Conclusions:

• The definition and application of "medical necessity" require re-evaluation in light of contemporary healthcare challenges and reform efforts.
• A clearer, more adaptable definition is needed to ensure equitable coverage and appropriate patient care within the evolving healthcare system.