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Interstit Cystitis: when insurers say no, reviewers often say yes

In 22 published external-review decisions involving interstit cystitis, independent physician reviewers overturned the insurer’s denial 27.3% of the time.

Published decisions
22
2001–2026
Overturned
27.3%
6 denials reversed

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
Experimental/Investigational
The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument.
12
16.7%
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
10
40%
Typical time to a decision
20 days
Most land between 15 and 24 days
Handled as urgent
40.9%
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 authorization and coverage for Solu-Cortef, Marcaine, heparin, Lidocaine and sodium bicarbonate mixture for bladder instillation. Findings: The physician reviewer found that the patient ihas intractable interstitial cystitis. the patient is noted to have significant painful voiding syndrome. The patient has had multiple therapies in the past including numerous oral agents. The patient has had sacral nerve stimulator inserted resulting in improvement in her voiding symptoms. However, she continues to have significant painful voiding syndrome with suprapubic pain. This has been quite disabling. She has tried subsequently pelvic floor therapy and diet. The patient reported significant improvement with intravesical therapy.
Experimental/Investigational · 2017 · IMR EI17-24515
Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for weekly in-office injections of Rimso-50. The records provided for review document that this patient presents with a history of interstitial cystitis. Per the provider’s reports, the patient has been treated with several medications including antibiotics, Pyridium, oxybutynin, Uribel, hyoscyamine, and Elmiron without success. Based on the American Urological Association (AUA) guidelines on interstitial cystitis, this patient has failed treatment with first and second-line therapies for interstitial cystitis. Clinical studies have shown that Rimso-50 is safe and effective in treating patients with interstitial cystitis and bladder pain syndrome.
Medical Necessity · 2023 · IMR MN23-40143

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Nature of Statutory Criteria/Case Summary: The patient requested authorization and coverage for tramadol daily.Guidelines state that when opioid therapy is used, a patient’s regimen should include nonpharmacologic therapy and nonopioid pharmacologic interventions. Additionally, they noted that “Clinicians should continue opioid therapy only if there is clinically meaningful improvement in pain and function that outweighs risks to patient safety.”Guidelines states, “Continuation, modification or termination of opioid therapy for pain is contingent on the clinician’s evaluation of (1) evidence of the patient’s progress toward treatment objectives and (2) the absence of substantial risks or adverse events, such as signs of substance use disorder and/or diversion.” Further, they strongly recommends prescribers use “opioid therapy for chronic pain that is not cancer-related, or part of pallia…
Medical Necessity · 2023 · IMR MN23-40301
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: An enrollee has requested authorization and coverage for Ruxience (rituximab-pvvr) administered as two infusions separated by 15 days. In this case, it is not clear if this patient has lupus. The results of a renal biopsy in the provider’s letter dated 6/30/23 did not mention immunofluorescence. Many conditions can cause interstitial nephritis and worsening renal function. In this case, based on normal complement and no mention of positive immune complexes on immunofluorescence, it appears that the patient does not have lupus nephritis. A positive result on either of these would indicate treatment for lupus.
Experimental/Investigational · 2023 · IMR EI23-39822

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 interstit cystitis 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 interstit cystitis? 27.3% won.

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