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Pharmacy benefit management

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Pharmacy benefit management

In the United States, a pharmacy benefit manager (PBM) is a third-party administrator of prescription drug programs for commercial health plans, self-insured employer plans, Medicare Part D plans, the Federal Employees Health Benefits Program, and state government employee plans. PBMs operate inside of integrated healthcare systems (e.g., Kaiser Permanente or Veterans Health Administration), as part of retail pharmacies (e.g., CVS Pharmacy), and as part of insurance companies (e.g., UnitedHealth Group).

The role of pharmacy benefit managers includes managing formularies, maintaining a pharmacy network, setting up rebate payments to pharmacies, processing prescription drug claims, providing mail order services, and managing drug utilization. PBMs act as the middlemen between pharmacies, drug manufacturers, wholesalers, and health insurance plan companies.

As of 2023, PBMs managed pharmacy benefits for 275 million Americans and the three largest PBMs in the US, CVS Caremark, Cigna Express Scripts, and UnitedHealth Group's Optum Rx, make up about 80% of the market share covering about 270 million people with a market of almost $600 billion in 2024.

This consolidation and concentration has led to lawsuits and bipartisan criticism for unfair business practices. In 2024, The New York Times, Federal Trade Commission, and many states' attorneys general accused pharmacy benefit managers of unfairly raising prices of drugs.

Additionally, several states have created regulations and policies concerning PBM business practices.

In the United States, health insurance providers often hire an outside company to handle price negotiations, insurance claims, and distribution of prescription drugs. Providers that use such pharmacy benefit managers include commercial health plans, self-insured employer plans, Medicare Part D plans, the Federal Employees Health Benefits Program, and state government employee plans. PBMs are designed to aggregate the collective buying power of enrollees through their client health plans, enabling plan sponsors and individuals to obtain lower prices for their prescription drugs. PBMs negotiate price discounts from retail pharmacies, rebates from pharmaceutical manufacturers, and mail-service pharmacies which home-deliver prescriptions without consulting face-to-face with a pharmacist.

Pharmacy benefit management companies can make revenue in several ways. First, they collect administrative and service fees from the original insurance plan. They can also collect rebates from the manufacturer. Traditional PBMs do not disclose the negotiated net price of the prescription drugs, allowing them to resell drugs at a public list price (also known as a sticker price), which is often higher than the net price they negotiate with the manufacturer. This practice is known as "spread pricing". The industry argues that savings are trade secrets. Pharmacies and insurance companies are often prohibited by PBMs from discussing costs and reimbursements. This practice has raised concerns about a lack of transparency. Therefore, states are often unaware of how much money they lose due to spread pricing, and the extent to which drug rebates are passed on to enrollees of Medicare plans. In response, states like Ohio, West Virginia, and Louisiana have taken action to regulate PBMs within their Medicaid programs. For instance, they have created new contracts that require all discounts and rebates to be reported to the states. In return, Medicaid pays PBMs a flat administrative fee.

PBMs advise their clients on ways to "structure drug benefits" and offer complex selections at a variety of price rates from which clients can choose. This happens by constructing a "formulary" or list of specific drugs that will be covered by the healthcare plan. The formulary is usually divided into several "tiers" of preference, with low tiers being assigned a higher copay to incentivize consumers to buy drugs on a preferred tier. Drugs that do not appear on the formulary at all mean consumers must pay the full list price. To get drugs listed on the formulary, manufacturers are usually required to pay the PBM a manufacturer's rebate, which lowers the net price of the drug, while keeping the list price the same.

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