Inflammatory Bowel Disease denials in California external review

In the California DMHC record, independent physician reviewers decided 19 published external-review cases involving inflammatory bowel diseaseand overturned the plan’s denial in 57.9%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
19
2008–2025
Overturned
57.9%
11 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.
11
45.5%
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
8
75%
Typical time to a decision
18 days
Most land between 7 and 21 days
Handled as urgent
42.1%
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

Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for infliximab therapeutic drug assay. Based on the recommendations in the current peer-reviewed medical literature, the testing of infliximab (Remicade) levels in response to suboptimal response to therapy is considered the standard of care. Specifically, patients may be found to have low levels of infliximab and require an increased dose. In other instances, patients may have high concentrations of neutralizing antibodies requiring a change of therapy. In this case, a high antibody concentration of circulating infliximab is driving the level down to an undetectable range. A therapeutic switch is indicated rather than increasing the infliximab dose. The results in this case highlight the importance of testing.
Experimental/Investigational · 2024 · IMR EI24-42066
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The parents of the patient requested authorization and coverage for infliximab-dyyb, biosimilar (Inflectra®) infusion, 10 mg (500 mg every eight weeks for one year). The submitted documentation supports the medical necessity of the treatment at issue. In current pediatric gastroenterology practice, successful treatment of IBD is not based on symptoms such as the presence or absence of clinical remission but based on mucosal healing. A patient with ongoing anemia, erythrocyte sedimentation rate (ESR) elevation, and rising fecal calprotectin cannot be considered in remission. In this clinical setting, intensification of treatment is warranted.
Medical Necessity · 2024 · IMR MN24-42325

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for the amount of a type of drug (tumor necrosis factor antagonists (TNF)) in the blood for evaluation of the enrollee’s inflammatory bowel disease (IBD). Findings: The physician reviewer found that There is not currently sufficient medical evidence to support the effectiveness of Anser ADA compared with conventional courses of action in the management this patient’s medical condition. The published studies on the use of anti-adalimumab antibodies and serum levels are small, retrospective, and/or observational rather than controlled in nature, preventing firm conclusions about cause and effect. These small studies at best demonstrated correlations between treatment failure and the presence of anti-adalimumab antibodies, which do not allow firm conclusions regarding cause and effect.
Experimental/Investigational · 2017 · IMR EI17-27224
Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for the fecal calprotectin testing for evaluation of the enrollee’s possible inflammatory bowel disease. Findings: The 3 physician reviewers found that the use of fecal calprotectin testing to diagnose change in bowel habits has not been accepted for routine use in this clinical setting. According to the American College of Physicians (ACP) “a specialist might measure fecal calprotectin, but only in conjunction with detailed history-taking, clinical examination, and serum inflammatory markers or other blood tests, to determine the need for endoscopic evaluation”. The ACP also stated that “fecal calprotectin is elevated in several other gastrointestinal diseases, including viral, bacterial, and protozoal causes of infective diarrhea”.
Experimental/Investigational · 2017 · IMR EI17-25965

Figures and quotations on this page come from 42,749 published decisions in the California DMHC Independent Medical Review dataset. These are California external-review outcomes. Other state and federal programs have different eligibility rules, processes, and current availability; the rates here do not transfer to those programs or predict an individual result. Excerpts are quoted verbatim from the public record and describe this condition generally, not any individual case.

Related guide

Fighting a denial for an IBD biologic — Humira, Skyrizi, Stelara, Entyvio, Remicade, Rinvoq? We wrote the full playbook: Crohn’s & colitis biologic denial evidence guide.

How to use this in your appeal

These outcomes describe eligible cases completed through California DMHC’s Independent Medical Review program. They do not estimate the chance that an internal appeal, an external review in another jurisdiction, or your individual case will succeed. Use the record to identify evidence patterns involving inflammatory bowel disease, then check the rights and deadlines that apply to your plan.

SOURCE: CALIFORNIA DMHC INDEPENDENT MEDICAL REVIEW OUTCOMES (CHHS OPEN DATA) · AGGREGATES + DEIDENTIFIED DECISION EXCERPTS/REFERENCE IDS · 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 inflammatory bowel disease? Use the California record to prepare.

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