The agency said its aim is to analyze the way CMS has chosen to implement PAMA and to estimate the potential financial impact to Medicare as a result of those choices.
After a GAO report found that CMS may be overpaying for lab tests, the legislator is asking the government payor to explain how it will ensure appropriate use of taxpayer funds.
Smaller labs that serve large Medicare populations, such as skilled nursing facility labs, have cut services and expressed concerns about their survival.
The amicus briefs challenge the method in which HHS collected data to establish market-based Medicare prices and found flaws in a district court decision dismissing the case.
At the Personalized Medicine Conference this week, stakeholders historically at odds over lab test regulation said it is up to Congress to resolve the issue.
