Admission denials: 51.7% overturned by independent reviewers
In 211 California IMR decisions from 2002 to 2026, reviewers overturned the plan 109 times (51.7%). In the last five years: 68.5% of 89. Denials reach IMR only when a member appeals all the way; read the caveats below before generalising.
By diagnosis
| Diagnosis category | Decisions | Overturned | Last 5 years |
|---|---|---|---|
| Cardiac/Circ Problem | 31 | 29.0% | 50.0% of 10 |
| Orth/Musculoskeletal | 22 | 45.5% | 54.5% of 11 |
| CNS/ Neuromusc Dis | 22 | 50.0% | 62.5% of 8 |
| Trauma/ Injuries | 22 | 68.2% | 81.8% of 11 |
| Mental Disorder | 20 | 60.0% | 100.0% of 2 |
| Digestive System/ GI | 18 | 50.0% | 50.0% of 8 |
| Respiratory System | 13 | 76.9% | 100.0% of 6 |
| Cancer | 12 | 50.0% | 66.7% of 6 |
| GU/ Kidney Disorder | 12 | 66.7% | 85.7% of 7 |
| Infectious Disease | 9 | 44.4% | 66.7% of 6 |
| Skin Disorders | 7 | 57.1% | 100.0% of 3 |
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 18 | 50.0% |
| 2022 | 11 | 72.7% |
| 2023 | 21 | 76.2% |
| 2024 | 20 | 80.0% |
| 2025 | 18 | 66.7% |
| 2026 | 1 | 0.0% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Records did not supportThe findings say the documentation did not show what was needed (usually an upheld denial). | 36 | 11.1% | 51.7% |
| Published evidence citedThe findings refer to peer-reviewed or published evidence. | 35 | 80.0% | 51.7% |
| Urgent or emergencyThe findings mention urgency. | 32 | 68.8% | 51.7% |
| Guidelines or criteria citedThe findings cite guidelines, criteria or a standard of care. | 12 | 66.7% | 51.7% |
| Prior therapies failedThe findings mention treatments that were tried without adequate response. | 12 | 75.0% | 51.7% |
| Alternatives contraindicatedThe findings mention a contraindication to the plan's preferred option. | 5 | 20.0% | 51.7% |
Keyword matches on the reviewer’s findings, not causes. A tag that appears mostly in overturned decisions is worth documenting in an appeal; it is not a guarantee.
From recent overturned decisions
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for emergency medical services during two separate periods of admission. The medical records provided for review do not support that the services provided during the first period of admission were emergent. According to the medical records, the patient did not have an acute abdomen, and …”
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for inpatient hospitalization services. Inpatient admission was indicated for treatment of this patient's condition. The patient presented with soft tissue infection due to methicillin-resistant Staphylococcus aureus (MRSA) that did not improve with oral antibiotics. Intravenous (IV) antibiotics and further evaluation were appropriate for this infection. …”
“The physician reviewer found that Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for inpatient hospitalization. The medical literature reports that older patients discharged home with home health care generally show better functional outcomes and lower readmission and mortality rates than those discharged to extended care facilities (ECFs). One study concluded that discharge to ECFs and inpatient rehabilitation …”
- California only: these are decisions by independent reviewers under California's IMR program (plans regulated by the Department of Managed Health Care). Other states and self-funded employer plans use different reviewers and rules.
- Selection: only denials that a member took all the way to IMR appear. Most denials are never appealed, and the ones that reach an external reviewer are not a random sample.
- Overturned means the reviewer disagreed with the plan; it does not mean the treatment worked or that a similar request will be approved.
- Argument tags are keyword matches on the reviewer's findings. They describe what the findings mention, not why the case was decided.
- Categories are DMHC's own labels (treatment sub-category and diagnosis category); 'Other' is a catch-all and is excluded from rankings.
Source: California Department of Managed Health Care, Independent Medical Review (IMR) Determinations, Trend (CHHS Open Data). Public California government data; Apellica's aggregates and tags are CC BY 4.0.
Questions
How often were Admission denials overturned?
In 211 California IMR decisions from 2002 to 2026, reviewers overturned the plan 109 times (51.7%). In the last five years: 68.5% of 89.
What did the reviewers' findings mention in overturned cases?
The table on this page counts keyword matches in the findings: prior therapies tried, contraindications, guidelines cited, published evidence, whether the records supported the request. They describe what the findings say, not why the case was decided.
Does a California IMR result apply to my plan?
Only California plans regulated by the Department of Managed Health Care go to IMR. Other states and self-funded employer plans use different reviewers, but the reasoning is the same kind: criteria, documentation and alternatives. Use the findings as a guide to what to document.
Related: California appeal rights · California external-review reversal rate · The levers library · CSV
Independent reviewers reverse plans when the record answers the criteria. Upload the denial letter; a senior reviewer reads it within 24 hours and tells you in writing whether it can be appealed and how. $0 upfront, 10% of what is recovered, nothing if we do not recover. Not a law firm.