Acute Psych denials: 76.9% overturned by independent reviewers
In 39 California IMR decisions from 2020 to 2025, reviewers overturned the plan 30 times (76.9%). In the last five years: 77.4% of 31. 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 |
|---|---|---|---|
| Mental Disorder | 38 | 76.3% | 76.7% of 30 |
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 11 | 81.8% |
| 2022 | 9 | 66.7% |
| 2023 | 2 | 0.0% |
| 2024 | 4 | 100.0% |
| 2025 | 5 | 100.0% |
What the findings mention
| What the findings mention | Decisions | Overturned | All decisions here |
|---|---|---|---|
| Guidelines or criteria citedThe findings cite guidelines, criteria or a standard of care. | 3 | 66.7% | 76.9% |
| Urgent or emergencyThe findings mention urgency. | 3 | 66.7% | 76.9% |
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
“Nature of Statutory Criteria/Case Summary: The parent of a patient has requested reimbursement for inpatient psychiatric hospitalization services. The American Academy of Child and Adolescent Psychiatry (AACAP) and American Association for Community Psychiatry (AACP) have unified the Child and Adolescent Level of Care Utilization System (CALOCUS) and the Child and Adolescent Service Intensity Instrument (CASII) into a single instrument, the …”
“The physician reviewer found that a patient has requested reimbursement and prospective authorization and coverage for psychiatric inpatient hospitalization level of care. The American Association of Community Psychiatrists Level of Care Utilization System (LOCUS) provides a reliable framework for determining the appropriate level of care for adults needing mental health treatment. Using LOCUS, the patient has a total score of …”
“Nature of Statutory Criteria/Case Summary: A patient has requested reimbursement for inpatient behavioral health services. The American Association of Community Psychiatrists’ Level of Care Utilization System (LOCUS) provides a reliable framework for determining the appropriate level of care for adults needing mental health treatment. Using LOCUS, providers score patients on a scale of 1-5 using a six-pronged Dimensional Rating System. …”
- 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 Acute Psych denials overturned?
In 39 California IMR decisions from 2020 to 2025, reviewers overturned the plan 30 times (76.9%). In the last five years: 77.4% of 31.
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.