Radiation Therapy denials in California external review

In the California DMHC record, independent physician reviewers decided 178 published external-review cases involving Radiation Therapyand overturned the plan’s denial in 56.7%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
178
2002–2025
Overturned
56.7%
101 denials reversed

Conditions behind Radiation Therapy denials

What insurers denied — and how those fights ended.
CategoryDecisionsOverturned
Breast61
52.5%
Prostate44
47.7%
Lung8
62.5%
Colon7
57.1%
Skin6
33.3%
Bone5
80%
Brain4
100%
Pancreas4
75%
Lymph Nodes3
33.3%

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.
108
49.1%
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
70
68.6%
Typical time to a decision
7 days
Most land between 5 and 15 days
Handled as urgent
73%
Expedited when a delay would cause harm
Recent direction
Rising
50%65.1% overturned, last three years

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 authorization and coverage for radiation therapy to the adrenal glands. Historically, the management of metastatic tumors has been focused on systemic therapies such as chemotherapy. The advent of newer molecular sequencing techniques and targeted therapies has allowed clinicians to provide very tailored systemic therapies to metastatic cancer patients. Patients who respond well to these targeted systemic therapies may demonstrate good disease response throughout most of their body. However, it is still common for certain localized metastatic tumor deposits to continue to grow despite good overall disease control in the rest of the body.
Experimental/Investigational · 2023 · IMR EI23-40222
Nature of Statutory Criteria/Case Summary: A patient has requested authorization and coverage for any or all of the additional components of the requested image-guided superficial radiation therapy services [therapeutic radiology treatment planning; therapeutic radiology simulation-aided field setting, simple; therapeutic radiology simulation-aided field setting, intermediate; treatment devices, design and construction, complex; medical radiation physics, dosimetry, treatment devices, and special services; radiation treatment management; and ultrasonic guidance for placement of radiation therapy fields] in addition to the authorized services [radiation treatment delivery, superficial and/or orthovoltage, per day; therapeutic radiology simulation aided field setting, and basic radiation dosimetry calculation].
Medical Necessity · 2025 · IMR MN25-44594

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 authorization and coverage for intraoperative radiation therapy. At issue is whether intraoperative radiation therapy (IORT) is likely to be more beneficial for this patient’s therapy compared to other standard forms of adjuvant radiation therapy following lumpectomy. It is considered standard therapy for patients to undergo adjuvant radiation therapy after a lumpectomy as part of their treatment program. Most commonly, this radiation therapy is given post-surgery over the course of one to several weeks using a variety of treatment modalities such as external beam or interstitial brachytherapy. The American Brachytherapy Society notes that there are established consensus guidelines which establish suitable patients for IORT as well as established dosing regimens.
Experimental/Investigational · 2022 · IMR EI22-38416
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient has requested authorization and coverage for Intra-operative radiation therapy (IORT).At issue is whether IORT is likely to be more beneficial for this patient’s therapy compared to other standard forms of adjuvant radiation therapy following lumpectomy. It is considered standard therapy for patients to undergo adjuvant radiation therapy after a lumpectomy as part of their treatment program. Most commonly, this radiation therapy is given post-surgery over the course of one to several weeks using a variety of treatment modalities such as external beam or interstitial brachytherapy. Studies show that there are established consensus guidelines which establish suitable patients for IORT as well as established dosing regimens.
Experimental/Investigational · 2024 · IMR EI24-40988

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 treatment generally, not any individual case.

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 Radiation Therapy, 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.

Denied Radiation Therapy? Use the California record to prepare.

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