naviHealth Prior Authorization Denials

What naviHealth Does

naviHealth is a care management company owned by UnitedHealth Group that processes prior authorization requests for Medicare Advantage plans—particularly for post-acute care transitions like skilled nursing facility admissions, inpatient rehabilitation, and home health services. If your parent is on a Medicare Advantage plan that uses naviHealth, the company's reviewers and algorithms decide whether their post-hospital care gets approved.

The company handles prior authorization for roughly half of all post-acute care requests across multiple Medicare Advantage insurers. When a hospital discharge planner submits a request for your parent to transfer to a skilled nursing facility for rehabilitation, naviHealth is often the entity that reviews the clinical documentation and issues the approval or denial.

Why Denial Rates Are So High

Federal investigations by the HHS Office of Inspector General have found that Medicare Advantage plans deny prior authorization requests for post-acute care at rates far exceeding the general denial average. For skilled nursing facility admissions, the overall denial rate is 12%, but certain for-profit plans deny up to 23%. For long-stay nursing home residents, denials reach 40%.

Third-party contractors like naviHealth process these requests using proprietary clinical assessment tools and algorithms that evaluate whether a patient meets the company's internal criteria for skilled care. The problem isn't necessarily that the algorithms are wrong about medical necessity—it's that they apply stricter thresholds than Medicare's own coverage guidelines would require under Original Medicare.

The result: denials that are overturned at staggering rates when appealed. According to OIG findings, 95% of naviHealth-processed denials are reversed in favor of the patient on appeal. For naviHealth specifically, the reversal rate reaches 97%. That means the vast majority of initial denials do not hold up to scrutiny—but they succeed as a gatekeeping mechanism because only 18% of denied patients or their families ever file an appeal.

What a Denial Looks Like in Practice

Your parent is hospitalized after a fall. The medical team recommends transfer to an SNF for physical therapy and rehabilitation. The discharge planner submits a prior authorization request to naviHealth. One of three things happens:

Approval: naviHealth authorizes a specific number of SNF days. The transfer proceeds. This is the outcome most of the time.

Partial approval: naviHealth authorizes fewer days than the medical team requested. Your parent may be sent home before rehabilitation is complete, or the facility requests an extension that goes through the same prior authorization process.

Denial: naviHealth determines your parent doesn't meet criteria for skilled nursing care and denies the transfer. Your parent either stays in the hospital (occupying an acute bed they don't need), gets discharged home without adequate rehabilitation support, or the family pays out of pocket—$16,000 average for an SNF stay.

The denial creates a clinical crisis that unfolds on a timeline of days. While the family organizes an appeal, the parent sits in a hospital bed exposed to hospital-acquired infections, or they go home to an unsafe environment. Average delays from initial request to resolution run five to six days.

How to Appeal

Every Medicare Advantage denial comes with a notice of denial that includes appeal instructions and a deadline. Act immediately—the appeal window is 65 calendar days from the date on the initial denial notice, but the clinical urgency means you should file within 24–48 hours.

Request an expedited appeal. Standard appeals take up to 30 days. Expedited appeals must be resolved within 72 hours. If your parent is currently hospitalized and the denial is preventing a medically necessary transfer, you qualify for expedited review. State that the standard timeline would seriously jeopardize your parent's health.

Get the physician's documentation right. The most common reason appeals succeed is that the physician's clinical notes are strengthened on appeal. Work with your parent's treating physician to ensure the medical necessity documentation uses specific clinical terms: "requires skilled nursing assessment," "active wound care protocol," "physical therapy tolerance monitoring," "medication management requiring licensed nursing oversight." Vague notes like "patient needs rehabilitation" don't meet the clinical criteria the reviewer applies.

Escalate beyond the plan. If the internal appeal is denied, the plan automatically forwards its reconsideration decision to an Independent Review Entity (IRE) for level 2 review—an external organization that evaluates the denial without any connection to the insurance company. IRE reversals add another layer of success for patients.

The Structural Alternative

Under Original Medicare, there is no prior authorization for skilled nursing facility admissions. If a parent has a qualifying three-day inpatient hospital stay, Medicare Part A covers up to 100 days of SNF care per benefit period—no naviHealth review, no algorithm, no denial to appeal. The treating physician and discharge planner make the clinical decision, and the transfer happens.

Medigap Plan G covers the SNF coinsurance ($217/day for days 21–100) that Original Medicare doesn't, reducing the family's cost-sharing for a 60-day stay from roughly $8,680 to $0 for the SNF stay. The separate $283 annual Part B deductible may still apply to other Part B services.

For families who've experienced a naviHealth denial, this is often the tipping point in the Medicare Advantage vs. Medigap decision—particularly if the parent's health trajectory suggests more hospitalizations and post-acute transitions ahead.

Our Medigap vs Medicare Advantage guide includes a prior authorization appeal tracker, a hospital status protocol card, and the complete cost comparison framework for evaluating both coverage paths.

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