The U.S. Department of Justice has extended its antitrust review of health insurer WellPoint Inc.'s (WLP) $4.46 billion plan to buy Amerigroup Corp. (AGP) while focusing on Amerigroup's Virginia operations, the Medicaid insurer disclosed late Thursday.

This so-called second request from the DOJ isn't expected to delay the planned closing of the deal. The companies expect to close by the end of the fourth quarter, rather than in early 2013 as first indicated last month, Amerigroup said in a regulatory filing.

An antitrust waiting period was set to expire late Wednesday unless the companies received a request for more information. They got one, which means the waiting period is now extended to 30 days after they substantially comply, unless the DOJ terminates the waiting period sooner.

Both companies "are working cooperatively with the DOJ staff and representatives of the Commonwealth of Virginia to resolve any potential concerns expeditiously," said Amerigroup, which is based in Virginia Beach, Va.

"This request for additional information is a normal and expected part of the regulatory process," Amerigroup said.

WellPoint, the second-largest managed-care firm by membership after UnitedHealth Group Inc. (UNH), is buying Amerigroup as the insurance sector increasingly looks for exposure to growing government-based health programs like Medicaid, which covers the poor. The deal for fast-growing Amerigroup will make WellPoint the biggest Medicaid insurer and may help it compete for Medicaid patients who also qualify for Medicare.

Aetna Inc. (AET) announced the latest industry consolidation move on Monday with a $5.7 billion cash-and-stock deal to buy Coventry Health Care Inc. (CVH), a mid-sized insurer that focuses on commercial and government-based insurance.

WellPoint shares sank 1.4% to $57.73 Thursday and were down slightly after hours. Amerigroup shares rose slightly to close at $90.25. The WellPoint deal valued Amerigroup at $92 per share.

Write to Jon Kamp at jon.kamp@dowjones.com

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Coventry Hlth Care (NYSE:CVH)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more Coventry Hlth Care Charts.
Coventry Hlth Care (NYSE:CVH)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more Coventry Hlth Care Charts.