(Reuters) – UnitedHealth Group (NYSE:) stated on Wednesday its unit Change Healthcare (NASDAQ:)’s pharmacy network was back online, weeks after a cyberattack had a ripple effect across the country’s healthcare system that relies heavily on insurance.
Change Healthcare handles approximately 50% of medical claims in the United States for about 900,000 physicians, 33,000 pharmacies, 5,500 hospitals, and 600 laboratories.
As of March 13, all major pharmacy and payment systems are operational and over 99% of pre-incident claim volume is functioning, UnitedHealth said.
However, the company mentioned its teams are addressing some pharmacies that are still offline.
Additionally, UnitedHealth Group stated it has pinpointed the source of the intrusion and established a method to restore the affected systems.
A detailed forensic analysis with Alphabet (NASDAQ:)’s cybersecurity unit Mandiant and Palo Alto Networks (NASDAQ:) is ongoing, according to UnitedHealth, without disclosing further details about the origin of the data breach.
Earlier today, the U.S. Department Of Health and Human Services launched an investigation into the February 21 cyberattack.
UnitedHealth had attributed the hack to the “Blackcat” gang, a well-known ransomware group with a history of disruptive attacks.
In a message posted to, and then swiftly deleted from their darknet site, the hackers announced on February 21 that they pilfered millions of sensitive records, including medical insurance and health data, from the company.
UnitedHealth has also been hit with at least six class action lawsuits accusing it of failing to safeguard millions of individuals’ personal data after the hack, with more lawsuits likely forthcoming.
