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2. Prior authorization - Wikipedia

   en.wikipedia.org/wiki/Prior_authorization

   Prior authorization is a check run by some insurance companies or third-party payers in the United States before they will agree to cover certain prescribed medications or medical procedures. [2] There are a number of reasons that insurance providers require prior authorization, including age, medical necessity, the availability of a generic ...

3. Advance healthcare directive - Wikipedia

   en.wikipedia.org/wiki/Advance_healthcare_directive

   In some cases a living will may forbid the use of various kinds of burdensome medical treatment. It may also be used to express wishes about the use or foregoing of food and water, if supplied via tubes or other medical devices. The living will is used only if the individual has become unable to give informed consent or refusal due to incapacity.

4. Step therapy - Wikipedia

   en.wikipedia.org/wiki/Step_therapy

   It is a type of prior authorization requirement that is intended to control the costs and risks posed by prescription drugs. The practice begins medication for a medical condition with the most cost-effective drug therapy and progresses to other more costly or risky therapies only if necessary.

5. Oklahoma bill would make medical care requiring prior ... - AOL

   www.aol.com/oklahoma-bill-medical-care-requiring...

   The bill defines prior authorization as “the process by which utilization review entities determine the medical necessity and medical appropriateness of otherwise covered health care services ...

6. Medical necessity - Wikipedia

   en.wikipedia.org/wiki/Medical_necessity

   Medicare pays for medical items and services that are "reasonable and necessary" or "appropriate" for a variety of purposes. [1] By statute, Medicare may pay only for items and services that are "reasonable and necessary for the diagnosis or treatment of illness or injury or to improve the functioning of a malformed body member" unless there is another statutory authorization for payment.

7. Patient Self-Determination Act - Wikipedia

   en.wikipedia.org/wiki/Patient_Self-Determination_Act

   The Patient Self-Determination Act (PSDA) was passed by the United States Congress in 1990 as an amendment to the Omnibus Budget Reconciliation Act of 1990.Effective on December 1, 1991, this legislation required many hospitals, nursing homes, home health agencies, hospice providers, health maintenance organizations (HMOs), and other health care institutions to provide information about ...