Feb 26 (Reuters) - UnitedHealth's technology unit Change Healthcare said it expects disruptions from a recent cyber security attack to last at least through Monday, according to the latest update on its status page.

The problems began last Wednesday after a "suspected nation-state associated cybersecurity threat actor" gained access to Change Healthcare's information technology systems, UnitedHealth said in a filing last week.

A number of pharmacy chains, including CVS Health and Walgreens, have said the outage was having knock-on effects on their businesses.

Change Healthcare is a key facilitator of electronic payments and data interchange across the U.S. healthcare system.

(Reporting by Pratik Jain in Bengaluru; Editing by Shounak Dasgupta and Sriraj Kalluvila)