Mental Health IOP / PHP Insurance Denial Appeals
Intensive outpatient (IOP) and partial hospitalization (PHP) denials are among the most common behavioral health parity disputes, frequently tied to step-therapy or prior-authorization requirements not applied to comparable medical/surgical levels of care.
Full mental health iop / php appeal guide
Mental Health IOP and PHP Insurance Denials: The MHPAEA Level-of-Care Appeal
Common denial codes for mental health iop / php
Appeal by payer
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Therapists get 5 free letters every month. Appealing your own denial? It's $19 per letter, one-time. MHPAEA arguments included when applicable.
Generate my appeal letter →Frequently asked questions about mental health iop / php appeals
What is the difference between IOP and PHP for mental health, and does MHPAEA cover both?
IOP (intensive outpatient) and PHP (partial hospitalization) are distinct levels of care with different weekly-hour intensity, and both are covered mental health benefit levels of care under MHPAEA on plans it applies to.
What CARC codes most often appear on IOP and PHP denials?
CO-197 (prior authorization absent or exceeded) and CO-119 (benefit maximum reached) are the most common, along with OA-23 when another payer's authorization is implicated.
What is the analogous medical/surgical comparator for mental health PHP?
Structured medical day programs — such as a medical day hospital, pulmonary rehabilitation, or a wound care program — are the typical comparator used to test whether the plan applies a step-therapy or prior-authorization requirement to PHP that it does not apply to comparable medical care.