Private equity-backed Equian has acquired AfterMath Claim Science Inc., a health care technology company.

AfterMath, headquartered in Warrenville, Illinois, provides post-payment recovery services that aim to eliminate medical claim payment errors through data mining technology called ClaimScope. Terms of the deal were not disclosed.

Indianapolis-based Equian says the deal expands its footprint in post-payment services and analytics. The company provides health care information services that aim to make sure health care costs are paid accurately.

Equian is backed by Great Point Partners, a Greenwich, Connecticut private equity firm that bought Equian in 2007. The firm’s other investments include Corrona Inc., an observational registry for physicians, and Orange Health Solutions, a technology enabled health care services company.

Other recent health care technology deals include Wex Inc.’s (NYSE: WXS) deal to buy Evolution1 for $532.5 million,  and Hill-Rom’s purchase of Trumpf Medical Systems for $250.6 million.