Carve-out (behavioral health)
A behavioral health carve-out is a health plan design where mental health and substance use benefits are administered and paid by a separate company or division instead of the main medical payer. Behavioral claims must be verified, authorized, and billed to the carve-out entity, not the medical plan, or they will deny.
What it means
What a behavioral health carve-out is
A behavioral health carve-out is an arrangement where a payer outsources mental health and substance use disorder benefits to a separate entity. The medical plan still holds the member contract, but a different company or division manages behavioral benefits, provider networks, utilization review, and claims payment.
Common carve-out entities include specialized mental health or substance use management organizations, or a separate behavioral division within a big commercial payer. The member ID card may show both the medical plan and the behavioral health administrator, often with a different phone number, payer ID, or claims address for behavioral services.
For revenue cycle, a carve-out is not just a benefit rule. It is a different payer with its own eligibility feeds, authorizations, NPIs, payer IDs, and payment rules.
Why it matters operationally
If you bill the medical plan instead of the behavioral carve-out, your claim will deny or reject, usually after 14 to 30 days. That adds days in AR and extra staff time to rebill correctly. Even when you rebill, you can run into timely filing issues and CO-29 or CO-16 type denials.
Carve-outs often have separate provider credentialing and network rules. A provider might be in network with the medical plan but out of network with the behavioral administrator. That shifts expected payment, raises patient cost sharing, and increases PR-1 or PR-2 balances you have to collect.
Authorizations are also split. You may get concurrent review and auth from the carve-out, while the medical plan retains medical benefits like lab, imaging, or medical detox. If your utilization review team calls the wrong number, you lose days on the auth and risk CO-197 and medical necessity denials.
How to work with carve-outs day to day
Operationally, carve-outs change three workflows: eligibility, authorization, and claims submission.
On eligibility, your team must identify when behavioral health is carved out. That usually means reading the 271 response or card carefully to find a behavioral payer name, payer ID, or a note that mental health benefits are handled by another vendor. Benefits-verification scripts should include specific prompts to ask, "Who administers behavioral health or substance use benefits for this member."
On authorizations, schedule and UR staff need the right phone and fax for the carve-out. Residential, PHP, and IOP stays often require concurrent review with the behavioral entity, not the medical plan. The auth record in your system should clearly show the carve-out payer name, auth number, span dates, level of care, and units.
On claims, your clearinghouse enrollment, EDI payer IDs, and paper addresses must route behavioral claims to the carve-out. Many systems store the benefit administrator as a separate payer. Your billing rules should pick the behavioral payer for revenue codes and CPT/HCPCS typically associated with behavioral health, such as 090x room and board for residential, 091x for PHP/IOP, and psychotherapy or SUD treatment codes. A claim-scrubbing step that flags "behavioral service billed to medical payer" will avoid a full cycle of denials.
Common mistakes
- Billing all services to the medical payer on the card for a UnitedHealthcare or Aetna member, even though behavioral health is administered by a different behavioral health vendor, which leads to repeated CO-16 or PR-96 denials and months of avoidable rebilling.
- Verifying only medical benefits on the 271 or via phone and assuming behavioral coverage is the same, then discovering at day 28 of a residential stay that BH benefits are managed by a carve-out with different day limits and prior authorization rules.
- Credentialing with the medical plan but not completing separate contracting with the behavioral carve-out, so your residential or IOP program is out of network for BH claims while in network for medical services at the same facility.
- Requesting prior authorization and concurrent review from the medical plan's UM department instead of the behavioral carve-out, resulting in no valid auth on file with the BH administrator and CO-197 denials for dates that were clinically approved but not logged correctly.
- Setting a single payer record in the practice management system for "Blue Cross" and using it for all claims, so PHP or SUD services route to the wrong payer ID and create N130 or MA130 remark codes instructing you to bill another entity.
Why it matters in behavioral health
Carve-outs are especially common in behavioral health because payers often contract with specialized managed behavioral health organizations to control inpatient psych, residential, PHP, IOP, and SUD costs. For treatment centers, that means your main commercial contract may not govern your actual behavioral reimbursement or network status.
Residential, PHP, and IOP per-diem stays are vulnerable in carve-out models. You might admit a member based on verbal confirmation from the medical plan, only to learn that the behavioral health carve-out uses different level-of-care criteria and denies medical necessity mid-stay. That turns expected facility revenue into patient balance or write-offs, and it often surfaces late because concurrent review is split.
State Medicaid and Medicaid managed care are heavily carved out in many markets. Some states move specialty mental health and SUD entirely to county mental health plans or separate behavioral health MCOs. The same beneficiary can have physical health through one MCO, SUD benefits through a state substance abuse agency, and specialty MH through a county plan. If your front end does not know which agency to bill for which service line, your AR will fill up with non-payable claims.
Carve-outs also interact poorly with long episodes and benefit maximums. A carve-out may apply separate day limits, visit caps, or SUD-specific limits that do not match the medical plan or federal parity expectations. UR staff need to track carved-out limits across multi-week stays, or you will keep delivering non-covered days that hit PR-96 and PR-204 balances for patients who often cannot pay.
How AI can help with Carve-out
AI can help with behavioral health carve-outs by reading 270/271 eligibility responses, card images, and payer portals to identify when behavioral benefits are administered by a separate entity and what that means operationally. An eligibility or benefits-verification agent can flag members with carve-outs, extract the behavioral administrator name, payer ID, auth phone, and basic BH benefit notes, then push that information into scheduling and UR work queues.
Supabill runs agents that hold payer- and state-specific rules, so a claims-scrubbing agent can look at each claim's revenue codes and CPT/HCPCS and ask, "Is this a behavioral service for which this plan typically uses a carve-out." If yes, it can route the claim to the correct behavioral payer, or flag missing BH credentialing or authorization before submission. Humans still need to handle ambiguous or conflicting information, escalate when the 271 and card disagree, and manage contract negotiations and complex appeals with carve-out administrators.
FAQ
How do I know if a member's behavioral health is carved out?
Check the insurance card and the 271 eligibility response for a separate behavioral health payer name, phone number, or payer ID. If you see a different company listed for mental health or substance use services, or if the eligibility system says "behavioral health managed by," that indicates a carve-out.
Who should get the prior authorization when behavioral health is carved out?
Prior authorization for therapy, IOP, PHP, residential, and SUD services typically must come from the behavioral health carve-out, not the medical plan. Use the BH-specific phone or portal listed on the 271 or card, and store the auth under the carve-out payer in your system.
Can I bill the medical plan first and let them forward claims to the carve-out?
In most cases, no. The medical plan will deny with a remark instructing you to bill the behavioral administrator directly. You should configure your clearinghouse and practice management system to send behavioral claims straight to the carve-out payer ID.
Are behavioral health carve-outs allowed under mental health parity rules?
Yes, carve-outs are allowed, but the overall benefits still must comply with federal mental health parity requirements on limits and management. Operationally, you still deal with a separate payer and separate processes, even though benefit design has to meet parity standards. Source
Do Medicaid programs use behavioral health carve-outs?
Many state Medicaid programs and Medicaid managed care plans carve out some or all behavioral health services to specialty plans, counties, or SUD agencies. The arrangements are state specific, so your team needs a payer map for each state and service type you bill. Source
Related terms
Benefits verification is the process of confirming a patient’s active coverage, financial responsibility, and authorization requirements with the payer before services are rendered. VOB can be manual (phone, fax, portal) or electronic (eVOB using 270/271 transactions or integrated portals).
A Medicaid Managed Care Organization (MCO) is a private or nonprofit health plan that contracts with a state Medicaid agency to deliver Medicaid-covered services to enrolled members, usually for a fixed per-member-per-month payment. In behavioral health revenue cycle, a Medicaid MCO is the billed payer and follows plan-specific coverage, authorization, and billing rules that differ from fee-for-service Medicaid.
Authorization span and units refer to the approved date range and quantity of services (days, visits, hours, or units) that a payer has authorized for a specific level of care or service. Authorization span controls when care is covered, and authorized units control how much care is covered before new approval is required.
Concurrent review is the payer's medical-necessity and authorization check that happens during an active episode of care, usually to decide whether to extend or stop approved days or units. In behavioral health it often controls continued coverage for inpatient, residential, PHP, IOP, and sometimes outpatient sessions.
Related denial codes
Claim lacks information or has a submission error
Time limit for filing has expired
Non-covered charges
Non-covered charge, patient responsibility
Refer to plan benefit documents for coverage details
Claim contains incomplete or invalid information