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Breast Asymmetry: when insurers say no, reviewers often say yes

In 21 published external-review decisions involving breast asymmetry, independent physician reviewers overturned the insurer’s denial 52.4% of the time.

Published decisions
21
2001–2026
Overturned
52.4%
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
Medical Necessity
The plan said the care wasn’t medically necessary. The most common fight, and the most winnable.
16
43.8%
Experimental/Investigational
The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument.
5
80%
Typical time to a decision
18 days
Most land between 10 and 22 days
Handled as urgent
9.5%
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 mastopexy (CPT 19371) and breast reduction (CPT 19318). Findings: The physician reviewer found that Cabral and colleagues state that, “Women with increased breast size experience symptoms such as pain in the neck, shoulders and lumbar spine, headache, intertrigo in the inframammary fold, difficulty in performing daily activities, paresthesia in the hands, difficulty in exercising, low self-esteem, and body dissatisfaction.” The American Society of Plastic Surgeons (ASPS) states that reduction mammaplasty authorization should be based on documentation of the severity of the symptoms of macromastia and impact on health-related quality of life with at least two of the following signs: (1) chronic breast pain due to weight of the breasts; (2) intertrigo unresponsive to medical management; (3)…
Medical Necessity · 2021 · IMR MN21-35809
Findings: The physician reviewer found that a patient has requested reimbursement for a mammaplasty. In this case, the resection of a small volume of tissue from the right breast was below the 22nd percentile of expected resection weight for the enrollee's body surface area and also below the 5th percentile of the lower threshold used in clinical criteria. This would qualify the procedure as not medically required according to weight alone. As such, the requested mammaplasty was not medically necessary for the treatment of the patient’s medical condition.However, although not medically necessary, for some female patients, breast size discrepancy can be a disturbing problem with an adverse impact on their quality of life.The California Reconstructive Surgery Statute requires health insurers to cover reconstructive surgeries, defined as surgeries performed to correct or repair abnormal str…
Medical Necessity · 2025 · IMR MN25-46004

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
A 51-year-old female enrollee has requested bilateral breast implants for the treatment of her breast asymmetry. Findings: The physician reviewer found that although symmetry is the surgical objective of breast reduction surgery, perfect symmetry of nipples, areolae, and breasts cannot be achieved. Furthermore, the two sides of the human body are not the same and can never be made the same. A patient with preoperative asymmetry prior to surgery will most likely have asymmetry after surgery, even though the surgeon strives to decrease the degree of asymmetry at surgery. No surgeon can guarantee or predict final breast size after breast reduction surgery any more than they can after breast augmentation. The error in the preoperative estimate versus final result can be as high as between 1 and 2 cup sizes.
Medical Necessity · 2009 · IMR MN09-9781
Nature of Statutory Criteria/Case Summary: An enrollee has requested authorization and coverage for breast magnetic resonance imaging. The indications for breast MRI include high and intermediate risk screening, for patients with a new diagnosis of breast cancer, for evaluation of response to chemotherapy prior to surgery, for evaluation of recurrence and metastatic cancer of an unknown primary source, and when mammographic and sonographic findings are inconclusive. In this case, if the asymmetry visualized on diagnostic mammography remained suspicious, then stereotactic biopsy is indicated. The records do not suggest that the breast asymmetry is concerning for implant rupture or that biopsy is not technically feasible.
Experimental/Investigational · 2021 · IMR EI21-35984

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 breast asymmetry 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 breast asymmetry? 52.4% won.

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