A financial services administration company has scooped up one of the pioneers in the personal health account administration system market.

The buyer, Fiserv Inc., Brookfield, Wis., has acquired the health account systems firm, CareGain Inc., East Windsor, N.J., for a price that was not disclosed.

CareGain, founded in 2001, markets the DefinedCare Platform system, which can help health plan managers combine administration of flexible spending accounts, health reimbursement arrangements, health savings accounts and other personal health accounts.

CareGain will operate as a part of Fiserv’s Fiserv Health unit, Fiserv says.