On Monday, medical software maker Cerner (NASDAQ:CERN) announced that it has agreed to purchase "health and wellness" company PureWellness for an undisclosed sum. PureWellness offers online health assessment programs, health tracking tools, patient education resources, and similar tools that companies can use to encourage employees and patients to increase their awareness of their health.

Cerner noted that PureWellness brings with it a customer base consisting of "thousands of organizations" servicing "4 million individuals."

Financial terms of the deal were not disclosed, but in a statement, Cerner noted that it doesn't expect PureWellness to have any material impact on its 2013 results. The transaction is expected to close in March.

Cerner shares closed at $85.38, down 2.5%, in Monday trading.