Depression denials in California external review

In the California DMHC record, independent physician reviewers decided 1,098 published external-review cases involving depressionand overturned the plan’s denial in 56.6%. That is a historical result among cases that reached this program, not a forecast for an individual appeal.

California DMHC decisions
1,098
2002–2025
Overturned
56.6%
622 denials reversed

Most-fought treatments for depression

What insurers denied — and how those fights ended.
TreatmentDecisionsOverturned
Residential Treatment Center400
69%
Intensive Outpatient Program106
73.6%
Partial Hospitalization Program99
66.7%
Residential Treatment67
43.3%
TMS31
35.5%
Individual Psychotherapy25
64%
Psychotherapy22
59.1%
Provigil22
40.9%
Residential Treatment Center Admission21
38.1%
Inpatient Psychiatric Hospitalization19
47.4%
Lexapro12
41.7%

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.
1,036
59.3%
Experimental/Investigational
The plan called the treatment unproven. These turn on published evidence, so the appeal is a literature argument.
50
12%
Urgent Care
Expedited reviews, decided in days rather than weeks.
12
16.7%
Typical time to a decision
16 days
Most land between 6 and 21 days
Handled as urgent
36.8%
Expedited when a delay would cause harm
Recent direction
Rising
74.2%79.6% 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

Nature of Statutory Criteria/Case Summary: An enrollee has requested reimbursement for Residential Treatment Center (RTC) services.At issue in this case is whether the RTC services that were provided to treat the patient’s mental health or substance use disorder were medically necessary as defined in Health and Safety Code section 1374.72(a)(3)(A). The American Academy of Child and Adolescent Psychiatry (AACAP) & American Association for Community Psychiatry (AACP) have unified the Child & Adolescent Level of Care Utilization System (CALOCUS) & the Child and Adolescent Service Intensity Instrument (CASII) into a single instrument, the CALOCUS-CASII. This instrument is a standardized tool used to determine the intensity of services needed for children & adolescents, 6-18 years of age, presenting with psychiatric, substance use, medical &/or developmental concerns.
Medical Necessity · 2021 · IMR MN21-36612
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement and prospective authorization and coverage for residential treatment center (RTC) services (ASAM 3.1). Per the American Society of Addiction Medicine (ASAM) criteria, this patient meets Level 3.1 criteria for RTC services. ASAM criteria focus on six dimensions to determine the appropriate level of care, which includes: 1)intoxication and withdrawal potential; 2)biomedical conditions; 3)emotional, behavioral, and cognitive conditions; 4)readiness to change; 5)relapse, continued use, or continued problem potential; and 6)recovery environment. For dimension 1, the patient did not have any symptoms of acute withdrawal during the time period under review. Given these findings, the patient meets ASAM 3.1 requirements for this dimension.
Medical Necessity · 2023 · IMR MN23-40322

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement for residential treatment center (RTC) services (ASAM 3.5). Per the American Society of Addiction Medicine (ASAM) criteria, this patient does not meet the Level 3.5 criteria for RTC services. ASAM criteria focus on six dimensions to determine the appropriate level of care, which includes: (1) intoxication and withdrawal potential; (2) biomedical conditions; (3) emotional, behavioral, and cognitive conditions; (4) readiness to change; (5) relapse, continued use, or continued problem potential; and (6) recovery environment. For dimension 1, the patient had no signs or symptoms of withdrawal after detoxification was completed. Given these findings, the patient met ASAM 3.5 requirements for this dimension.For dimension 2, the patient had no medical problems.
Medical Necessity · 2023 · IMR MN23-39788
Nature of Statutory Criteria/Case Summary: The patient has requested reimbursement and prospective authorization and coverage for residential treatment center (RTC) services (ASAM 3.5). Per the American Society of Addiction Medicine (ASAM) criteria, this patient does not meet Level 3.5 criteria for RTC services from 7/28/22 forward. The ASAM criteria focuses on six dimensions to determine the appropriate level of care, which includes: (1) intoxication and withdrawal potential; (2) biomedical conditions; (3) emotional, behavioral and cognitive conditions; (4) readiness to change; (5) relapse, continued use, or continued problem potential; and (6) recovery environment. For dimension 1, the patient no longer had withdrawal symptoms per the records. The patient’s withdrawal needs can be safely managed in a Level 3.5 setting.
Medical Necessity · 2022 · IMR MN22-37874

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 condition generally, not any individual case.

Related guide

A diagnosis does not by itself establish treatment intensity. See the separate record for residential, PHP, IOP, inpatient, and withdrawal-management denials: behavioral-health level-of-care evidence guide.

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 depression, 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.

Fighting a denial for depression? Use the California record to prepare.

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