Acute Psych for Mental Disorder: 76.3% of denials overturned
In 38 California IMR decisions from 2020 to 2025, reviewers overturned 29 (76.3%). In the last five years: 76.7% of 30. 38 were medical-necessity disputes.
By year (last five)
| Year | Decisions | Overturned |
|---|---|---|
| 2021 | 11 | 81.8% |
| 2022 | 8 | 62.5% |
| 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% | 76.3% |
| Urgent or emergencyThe findings mention urgency. | 3 | 66.7% | 76.3% |
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. …”
And one the reviewer upheld
“Nature of Statutory Criteria/Case Summary: The parent of a patient has requested reimbursement for acute psychiatric inpatient treatment level of care 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 …”
- 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 for Mental Disorder overturned?
In 38 California IMR decisions from 2020 to 2025, reviewers overturned 29 (76.3%). In the last five years: 76.7% of 30. 38 were medical-necessity disputes.
What should an appeal document, based on these findings?
Whatever the plan's criteria ask for, shown in the record: the treatments already tried and their results, contraindications to the plan's preferred option, the guideline or evidence that supports the request, and the treating clinician's reasoning written to the criteria. The tag table shows which of these the reviewers mentioned most in overturned cases.
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 they weigh the same things.
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.