Level of care authorization and concurrent review
Residential, PHP and IOP each require authorization, and continued stay must be justified through concurrent review during treatment. Days delivered past an expired authorization are usually unrecoverable.
Medical necessity criteria
Payers apply standardized level-of-care criteria. Clinical documentation must speak to those criteria specifically, or continued stay is denied regardless of clinical judgment.
Institutional versus professional claims
Programs often bill facility services on an institutional claim and physician or therapist services professionally. Sending the wrong service on the wrong claim type denies both.
Toxicology and drug testing compliance
Urine drug testing is heavily scrutinized for frequency, medical necessity and definitive versus presumptive testing. It is the highest audit-risk area in the sector.
Out-of-network and single case agreements
Many programs operate out of network, where reimbursement depends on negotiated agreements and persistent appeals rather than a fee schedule.