A unit of UnitedHealth Group Inc. is scooping up a company that helps hospitals prove that the care they deliver is necessary.

Ingenix, Eden Prairie, Minn., has agreed to acquire Executive Health Resources Inc., Newtown Square, Pa.

Ingenix sells consulting services and information services to hospitals, health plans and other customers.

Executive Health teams help hospitals show government health plan managers that plan enrollees are getting medically necessary care in an appropriate setting.

Ingenix and its parent, UnitedHealth, Minnetonka, Minn. (NYSE:UNH), are not saying how much they are paying for Executive Health. The companies hope to get the approvals they need to complete the deal by Dec. 31.

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