The suit alleges McKesson and its subsidiaries extracted the overfill from oncology drugs, repacked it and distributed it to medical providers who then applied with the government for reimbursement.
Adding more direct-to-consumer health services could be crucial for the success of CVS's $68 billion merger with Aetna, which the companies have touted as a way to control medical costs.
Small and midsize accounting and advisory service companies are recruiting former partners of big firms, creating an employment model that could benefit other industries.
A federal judge in Ohio setting a trial date for next March for cases from three of the cities and counties that have brought suit against drug companies.