The company detected suspicious activity on Wednesday morning and shut down its systems to prevent further issues.

This attack is causing delays for pharmacies trying to process prescriptions. Many, including those serving the 22nd Medical Group at McConnell Air Force Base, have informed customers of the outage, asking for patience as they work to resolve the problem.

Without a clear resolution timeline, pharmacies are advising that order processing, particularly through insurance, may be delayed.

Although there's no definitive timeframe, the outage could potentially last until Friday. As pharmacies like Knight’s Pharmacy in Berea, Kentucky, experience difficulties with insurance-based prescriptions, they are preparing to handle a backlog of orders swiftly once systems are back online.

CVS acknowledges the outage but confirms its systems remain secure. The company is working to maintain patient care, using its business continuity plans to address challenges in processing insurance claims.

To date, details regarding the cause or origin of the cyberattack on Change Healthcare remain undisclosed to the public.