In a separate report, Bloomberg wrote Humana sued the federal government on Friday in the Northern District of Texas, arguing the metrics used to rank the plans are “arbitrary and capricious.” Those star rankings are directly tied to billions of dollars in bonus payments.

Last December, the two companies failed to agree on a price as Cigna pursued the purchase of the Louisville-based company.

U.S. health insurer Cigna Group has revived efforts to merge with smaller rival Humana after abandoning the pursuit late last year, Bloomberg News reported on Friday, citing people familiar with the matter.

Cigna has brought merger talks with Humana back from the dead, according to a new report in Bloomberg.

CIGNA Group has revived efforts to combine with its smaller rival Humana after merger talks fell apart late last year, according to sources familiar with the matter. Read more at The Business Times.

Humana (HUM) stock rises amid takeover speculation, with potential interest from Cigna (CI) and a Western European company.

Cigna Group has revived efforts to combine with its smaller rival Humana Inc. after merger talks fell apart late last year, according to people familiar with the matter. The two health insurance giants have held informal discussions recently about a potential deal,