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Payer

Aetna will not have to pay Florida hospitals owned by Nashville, Tenn.-based HCA Healthcare $150 million related to an arbitration case, according to a Securities and Exchange Commission filing from Aetna's parent company, CVS Health.

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A single-payer health system could mean a variety of changes for the healthcare system, depending on its design. One thing is clear, according to the Congressional Budget Office: All participants would face substantial uncertainty.

To overcome challenges of fraudulent activity and digital transactions, the insurance industry is beginning to introduce blockchain, which is designed to bring accountability, security and transparency to the industry, according to Yahoo Finance.

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