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Ischemic Stroke: when insurers say no, reviewers often say yes

In 15 published external-review decisions involving ischemic stroke, independent physician reviewers overturned the insurer’s denial 46.7% of the time.

Published decisions
15
2001–2026
Overturned
46.7%
7 denials reversed

Most-fought treatments for ischemic stroke

What insurers denied — and how those fights ended.
CategoryDecisionsOverturned
Skilled Nursing Facility3
0%

What the insurer actually argued

Denials fall into different categories, and they don’t succeed equally — so the reason on your letter changes how you should answer it.
Reason givenDecisionsOverturned
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
10
40%
Experimental/Investigational
The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument.
5
60%
Typical time to a decision
7 days
Most land between 5 and 21 days
Handled as urgent
46.7%
Expedited when a delay would cause harm
What the reviewers wrote
Excerpts from the independent reviewers’ published findings — the actual reasoning, quoted, not summarised.

Where the denial was overturned

Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for the computed tomography (CT) perfusion with contrast. Findings: The physician reviewer found that the acute management of strokes has undergone a fundamental change in the last several years. Typically, a patient presents with stroke symptoms, and a decision must quickly be made regarding whether thrombolytic therapy is indicated. This might include venous administration of tissue plasminogen activator (tPA), intra-arterial administration of tPA, or even surgical/radiologic thrombectomy. However, there is an upper time limit in which tPA is most effective. Thus, a provider must distinguish whether the suspected stroke is ischemic or hemorrhagic. This is generally easily accomplished with a simple unenhanced CT scan of the brain.
Experimental/Investigational · 2019 · IMR EI19-30047
Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement for inpatient skilled nursing facility (SNF) services and physical therapy, occupational therapy, and speech therapy services provided at Broadway by the Sea. Functional impairments due to acquired brain insults such as stroke can be severe to profound. One researcher notes that rehabilitation is an important aspect of the continuum of care in strokes, and that successful rehabilitation involves understanding the natural history of stroke recovery and a multidisciplinary approach to identify and treat common poststroke sequelae. A researcher notes that patients may improve spontaneously within the first three months and then more slowly in the coming year.
Medical Necessity · 2021 · IMR MN21-36543

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement and prospective authorization and coverage for skilled nursing facility services, including physical therapy twice daily, occupational therapy twice weekly, and speech therapy. Admission to a SNF is appropriate for patients with conditions that require observation, evaluation of treatment plans, and updating of orders by a physician along with constantly available skilled nursing services. Skilled nursing services may include wound management, tracheostomy care, bowel and bladder training, tube feeding, and the administration of intravenous (IV) medications or medications that cannot be self-administered safely. Skilled nursing observation may include regular monitoring of vital signs, skin in the setting of wounds, and intake and output.
Medical Necessity · 2024 · IMR MN24-40739
Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement and prospective authorization and coverage for skilled nursing facility (SNF) services. Functional impairments due to acquired brain insults such as stroke can be severe to profound. While functional recovery may be amenable to natural recovery processes and rehabilitative measures, the extent of initial injury is a major determinant of functional outcomes as it defines the residual neuronal reservoir that is capable of engaging in recovery (Alawieh, et al.). As noted in the medical literature, most of the significant neurological and functional recovery following a stroke occurs in the early stages after stroke and gains are slower in subsequent stages (Kubis). There is a general consensus that initiating rehabilitative measures earlier in the post-stroke course enhances outcomes (Belagaje, et al.).
Medical Necessity · 2021 · IMR MN21-35481

Figures and quotations on this page come from 42,749 published decisions in the California DMHC Independent Medical Review dataset. These are California outcomes — every state runs an equivalent external review, but the rates here are California’s. Excerpts are quoted verbatim from the public record and describe this condition generally, not any individual case.

How to use this in your appeal

These outcomes come from California’s external review program — an independent physician panel whose decision binds the insurer. Every state has an equivalent, and internal appeals succeed even more often. If your care for ischemic stroke was denied, the published record says the denial is worth fighting.

SOURCE: CALIFORNIA DMHC INDEPENDENT MEDICAL REVIEW OUTCOMES (CHHS OPEN DATA) · DERIVED AGGREGATE STATISTICS ONLY · METHODOLOGY

Not legal or medical advice. Coverage Rights is a self-help tool that helps you prepare your own appeal. For advice about your specific situation, talk to a licensed attorney or your doctor.

Fighting a denial for ischemic stroke? 46.7% won.

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