The Department of Justice on Tuesday announced it has intervened in a whistleblower lawsuit against Mallinckrodt over allegations the drug maker knowingly underpaid Medicaid rebates it owed due to significant price increases to its drug Acthar.

Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...