HHS OIG Releases Report on MAO Performance

On April 27,2022, the Office of Inspector General of the Department of Health and Human Services (OIG), Office of Evaluations and Inspections, issued a report on the performance of Medicare Advantage Organizations (MAOs) in approving care and payment consistently with Medicare coverage rules. In its review, OIG found that 13% of MAO denials of prior authorization requests should have been approved and that 18% of payment requests from providers were improperly denied. OIG also made a number of recommendations to the Center of Medicare and Medicaid Services (CMS) with respect to its oversight of MAOs.

OIG Study

OIG undertook the study to assess whether MAOs are appropriately providing access to medically necessary services and making payment to providers consistently with Medicare coverage rules. OIG conducted the review by randomly selecting 250 denials of prior authorization requests and 250 payment request denials by 15 of the largest MAOs during a week in June of 2019. OIG had coding experts review the cases and had physician reviewers examine the medical records. Based on these reviews, OIG estimated the rates at which MAOs issued denials of services or payment that met Medicare coverage rules and MAO billing rules. OIG also examined the reasons for the inappropriate denials and the types of services involved.

In the study, OIG found that 13% of prior authorization denials were for services that met Medicare coverage rules, thus delaying or denying care that likely should have been approved. MAOs made many of the denials by applying MAO clinical criteria that are not part of Medicare coverage rules. OIG also found instances where MAOs requested further documentation that led to a denial of care when it was not furnished, as such additional documentation was not required to determine medical necessity. OIG’s reviewers found that either sufficient clinical information was in the medical record to authorize the care or the documentation requested was already contained in the medical record.

OIG further found in the study that 18% of payment denials fully met Medicare coverage rules and MAO payment policies. As a result of these denials, payment was delayed or precluded for services that should have been paid.

OIG found that common reasons for these inappropriate payment denials were human error in conducting manual reviews (for example, the reviewer not recognizing that a skilled nursing facility (SNF) was an in-network provider), and inaccurate programming. OIG also found that advanced imaging services (including MRIs and CT scans), stays in post-acute facilities (including SNFs and inpatient rehabilitation facilities), and injections were the services that were most prominent in the inappropriate denials that should have been authorized for care and payment in accordance with Medicare coverage rules.

Based on the study, OIG recommended that CMS should issue new guidance on both the appropriate and inappropriate use of MAO clinical criteria that are not contained in Medicare coverage rules. In particular, OIG recommended that CMS should more clearly define what it means when it states that MAO clinical criteria may not be “more restrictive” than Medicare coverage rules. OIG also recommended that CMS update its audit protocols to address issues identified in the report such as MAO use of clinical criteria and/or examine particular service types that led to more denials. OIG suggests CMS should consider enforcement actions for MAOs that demonstrate a pattern of inappropriate payment denials. CMS reviewed the OIG report and concurred with each of OIG’s recommendations.

AHA Response

The American Hospital Association urged the Justice Department to use its authority under the False Claims Act to create a fraud task force to investigate commercial insurers that routinely deny patients access to services. The hospital lobby cited what it called an “alarming” and “distressing” report from the HHS OIG. “This problem has grown so large — and has lasted for so long — that only the prospect of civil and criminal penalties can adequately prevent the widespread fraud certain MAOs are perpetrating against sick and elderly patients across the country, as well as against the public,” the AHA said in a letter to Acting Assistant Attorney General Brian Boynton.

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