Change Healthcare offers payment and revenue cycle management tools, and other solutions such as electronic prescription software. On Feb. 21, UnitedHealth Group , which owns Change Healthcare, discovered that hackers compromised part of the unit's information technology systems. UnitedHealth told CNBC earlier this month that there is "no evidence of any new cyber incident at Change Healthcare." It's just one of the ways Change Healthcare touches cash flow within the health-care sector. A controversial mergerSheldon Cooper | Sopa Images | Lightrocket | Getty ImagesUnitedHealth's ownership of Change Healthcare has raised eyebrows from the outset.

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Persons: Omar Marques, Dr, Angeli Maun Akey, Akey, she's, UnitedHealth, I've, Andrew, Mike Bradley, Barbara McAneny, McAneny, Sarah Carlson, Carlson, Sheldon Cooper, Optum, Michael Nagle, Tyler Kisling, Kisling, he's, There's, it's, Purvi, Parikh hadn't, they've, Amit Phull, Phull, Igor Golovniov Organizations: Lightrocket, CNBC, Healthcare, UnitedHealth, U.S . Securities, Exchange Commission, Change, Inc, Bloomberg, Getty, U.S, American Medical Association, AMA, U.S . Department of Justice, DOJ, U.S . Department of Health, Human Services, Wall Street, New York Stock Exchange, Change Healthcare Locations: Gainesville , Florida, U.S, Minnetonka , Minnesota, UnitedHealth's, New Mexico, Boulder , Colorado, California, New York City, UnitedHealth