Instead of saving taxpayers money, Medicare Advantage has added tens of billions of dollars in costs, researchers and some government officials have said. One reason is that insurers can add diagnoses to ones that patients’ own doctors submit. Medicare gave insurers that option so they could catch conditions that doctors neglected to record. The Journal’s analysis, however, found many diagnoses were added for which patients received no treatment, or that contradicted their doctors’ views.
https://www.wsj.com/health/healthcare/medicare-health-insurance-diagnosis-payments-b4d99a5d