In the six whistleblower lawsuits against Kaiser Permanente consortium members in which the Department of Justice intervened in July 2021, the whistleblowers allege that Kaiser violated the False Claims Act in its operation of Medicare Advantage plans—specifically that Kaiser caused its doctors to create after-the-fact "addenda" to patients' medical records for the purpose of adding diagnoses that did not comply with Medicare requirements because the patients did not have those diagnoses or the doctor did not address those diagnoses during the patients' visits.