Mental health parity denials
The federal Mental Health Parity and Addiction Equity Act (MHPAEA) requires plans to apply no more restrictive treatment limitations to mental health and substance-use disorder benefits than to comparable medical/surgical benefits. Many denials violate parity — often unintentionally — and these violations are a powerful reversal lever.
What gets denied
- Residential mental health and SUD treatment
- Intensive outpatient (IOP) and partial hospitalization (PHP)
- Applied behavior analysis (ABA) for autism
- Eating disorder treatment
- Extended therapy session counts
- Inpatient psychiatric stays
Common denial reasons
- Plan applies a stricter medical-necessity standard than for surgical care
- Plan limits sessions / days without comparable medical limits
- Network-adequacy gap (no in-network MH providers)
- Plan uses non-evidence-based internal criteria (e.g. requiring failure of lower level of care)
How we approach the appeal
Request the plan's non-quantitative treatment limitation (NQTL) analysis under MHPAEA — federal law requires plans to produce it on demand. Compare the criteria used for the denied MH service against criteria for an analogous medical/surgical service. File parallel complaints with the U.S. Department of Labor (for ERISA plans) or the state DOI (for fully-insured plans). Cite Wit v. United Behavioral Health for behavioral level-of-care cases.
Internal appeal: 180 days. External review: typically 4 months from final internal denial. Parity violations can also be reported to DOL or state regulators at any time.
$2,000 – $200,000+
- · Denial letter
- · Plan's medical-necessity criteria for the denied service
- · Plan's medical-necessity criteria for an analogous medical/surgical service
- · Treating clinician's letter and treatment plan
- · Documentation of prior levels of care attempted (if applicable)
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Start Your AppealThis page provides general information about appeal strategy. It is not legal advice. Outcomes depend on documentation, plan terms, and timing.