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Partial Hospital Program denials: what the review data shows

Independent reviewers have decided 20 published cases where an insurer denied Partial Hospital Program — and they overturned the insurer 60% of the time. A denial for Partial Hospital Program is a starting position, not a final answer.

Published decisions
20
2001–2026
Overturned
60%
12 denials reversed

Conditions behind partial hospital program denials

What insurers denied — and how those fights ended.
CategoryDecisionsOverturned
Eating Disorder7
57.1%
Depression4
50%
Typical time to a decision
21 days
Most land between 7 and 21 days
Handled as urgent
30%
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

Findings: The physician reviewer found that Nature of Statutory Criteria/Case Summary: The parent of a patient has requested authorization and coverage for autism partial hospital program level of care services. Authors 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 Child and Adolescent Level of Care/Service Intensity Utilization System (CALOCUS-CASII). This instrument is a standardized tool used to determine the intensity of services needed for children and adolescents, 6-18 years of age, presenting with psychiatric, substance use, medical and/or developmental concerns. Using CALOCUS-CASII, providers score patients on a scale of 1-5 using a six-pronged Dimensional Rating System.
Medical Necessity · 2023 · IMR MN23-40009
Nature of Statutory Criteria/Case Summary: The patient’s parent has requested reimbursement for all or any of the PHP services provided at Rowi Teen and Parents Wellness. The Child and Adolescent Level of Care Utilization System (CALOCUS) provides a framework for determining the clinically appropriate level of care for a child or adolescent in mental health treatment. With regard to risk of harm, the records support a score of 3. The patient had a significant risk of harm, due to the presence of suicidal ideation, a history of two suicide attempts within the past year, and disordered eating that compromised her ability to care for herself. In terms of functional status, the records support a score of 3. The documentation noted moderate functional impairment due to the patient’s ongoing struggles with eating, mood swings, auditory hallucinations, and paranoia.
Medical Necessity · 2021 · IMR MN21-35483

Where the denial was upheld

Worth reading too — these show what an appeal has to overcome.
Nature of Statutory Criteria/Case Summary: The patient’s parent has requested reimbursement for partial hospital program (PHP) 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 Child and Adolescent Level of Care/Service Intensity Utilization System (CALOCUS-CASII). This instrument is a standardized tool used to determine the intensity of services needed for children and adolescents, 6-18 years of age, presenting with psychiatric, substance use, medical and/or developmental concerns. Using CALOCUS-CASII, providers score patients on a scale of 1-5 using a six-pronged Dimensional Rating System.
Medical Necessity · 2022 · IMR MN22-38021
Nature of Statutory Criteria/Case Summary: The patient is diagnosed with cannabis use disorder. The patient was admitted to a PHP on 8/31/18. On admission, he denied a history of mental health symptoms and any history of suicidal ideation or suicide attempts. His last cannabis use was on 8/10/18. He denied any active medical issues and was noted to be able to complete his activities of daily living. The patient was noted to recognize that he had a substance use problem and expressed motivation for change. On 9/11/18, the patient reported high cravings and a lowering level of anxiety. On 9/12/18, the patient’s urine drug screen was negative. On 9/14/18, the patient was noted to have had a positive impact on his peers in group therapy. On 9/14/18, no post-acute withdrawal symptoms were noted. He also reported a decrease in cravings, rated as six of 10.
Medical Necessity · 2019 · IMR MN19-30665

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 treatment generally, not any individual case.

How to use this in your appeal

These are outcomes from California’s external review program — an independent physician panel that binds the insurer. Every state has an equivalent process, and internal appeals succeed even more often. Cite the outcome record for Partial Hospital Programwhen you appeal: reviewers routinely find that denials like yours didn’t hold up.

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.

Denied Partial Hospital Program? 60% got it reversed.

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