Mental Health Carve-Outs: Why Behavioral Health Claims Go to the Wrong Payer

A patient hands your front desk an insurance card. The policy is active. Your practice participates with the carrier. You collect the copay, the clinician completes the visit, and the claim goes out.

Two weeks later it comes back rejected. It went to the wrong payer.

This is what a mental health carve-out looks like from the billing side. The insurance company printed on the card is not always the organization that administers outpatient therapy, psychiatry, substance use treatment, or psychological testing. Those benefits are frequently delegated to a separate managed behavioral health organization with its own network, portal, authorization rules, payer ID, and timely filing clock.

This guide covers how to identify a carve-out before the visit, what it changes across eligibility, network status, authorization, and patient estimates, and how to recover a claim that has already gone to the wrong place.

What Is a Mental Health Carve-Out?

A mental health carve-out is an arrangement in which a health plan delegates administration of behavioral health benefits to a separate organization, usually a managed behavioral health organization (MBHO). The medical carrier keeps primary care, labs, imaging, and medical specialty care. The MBHO takes the behavioral health book.

The delegated administrator typically controls all of the following independently of the medical plan:

• The provider network and credentialing process
• Eligibility and benefits responses
• Prior authorization and concurrent review
• The payer ID and claims address
• Timely filing limits
• Appeals and reconsideration workflow

Services that commonly sit on the behavioral health side of the split include:

• Psychiatric diagnostic evaluation (90791, 90792)
• Individual psychotherapy (90832, 90834, 90837)
• Family and group psychotherapy (90846, 90847, 90853)
• Psychological and neuropsychological testing (96130 through 96139)
• Medication management and psychiatric E/M
• Intensive outpatient and partial hospitalization programs
• Substance use disorder treatment
• Applied Behavior Analysis (97151 through 97158), depending on the plan

The carrier's brand stays on the front of the card. The administrator, when it appears at all, shows up in small type on the back, inside the plan portal, or in a detailed eligibility response. Plenty of cards never name it.

Where Carve-Outs Are Most Common

Carve-outs are not evenly distributed. Knowing where they cluster tells your intake team when to slow down.

• Self-funded employer plans. The most common carve-out setting. The employer selects the behavioral health vendor separately from the medical TPA, which is why two patients holding identical-looking cards from the same carrier can route to different administrators.
• Medicaid managed care. Many states contract behavioral health to a specialty plan, a prepaid inpatient health plan, or a regional behavioral health authority. Other states have integrated it back into the medical MCO. This changes by state and by contract year.
• Medicare Advantage. Plans often delegate behavioral health network management and utilization review to a vendor even when claims still route through the plan itself.
• Commercial fully insured plans. The least predictable group. Some carriers administer behavioral health internally, others delegate to an affiliated entity.
• Traditional Medicare. No carve-out. Part B behavioral health claims go to the MAC like any other professional claim.

Why a plan structures itself this way matters less than what it does to your workflow:

1. The organization that confirms medical eligibility is not the one that confirms behavioral health benefits.
2. Medical network participation does not establish behavioral health network participation.
3. Medical authorization rules do not apply to behavioral health services.
4. The medical payer ID is not the behavioral health payer ID.
5. Patient cost sharing can differ between the two benefit sets.

Arrangements vary by employer group, funding type, state, product, and plan year. Verify at the member level, not the brand level.

Medical Carrier vs. Behavioral Health Administrator

This split is not identical across plans. Some carriers administer behavioral health internally. Others delegate only certain services, such as psychological testing or ABA, and keep routine outpatient therapy in house. A single carrier can use different administrators for its commercial, Medicaid, Medicare Advantage, and employer-sponsored products.

Who Administers Behavioral Health Benefits?

Behavioral health practices most often encounter organizations such as:

• Optum Behavioral Health
• Carelon Behavioral Health
• Evernorth Behavioral Health
• Magellan Healthcare
• Lucet
• State-specific Medicaid behavioral health administrators
• Regional Blue Cross and Blue Shield behavioral health networks

Treat these as names to recognize, not as a crosswalk you can bill from. UnitedHealthcare, for instance, directs behavioral health practitioners to Optum Behavioral Health Solutions for credentialing and contracting. Carelon's provider instructions show that portal and payer ID pathways differ depending on which health plan the member belongs to.

The takeaway is not that every UnitedHealthcare claim lands in one place or that every Anthem plan follows one route. It is that the administrator and the claim route have to be confirmed for the specific member, plan, and date of service.

Why Standard Eligibility Checks Miss Carve-Outs

Most eligibility checks miss carve-outs for a mechanical reason, not a diligence reason.

When your clearinghouse sends a 270 inquiry with the default service type code 30 (health benefit plan coverage), the 271 response comes back with general medical benefits: active coverage, effective date, deductible, and an office copay. That copay is a medical copay. Nothing in that response is wrong. It just does not describe the behavioral health benefit.

Two changes fix most of it.

Request behavioral health service type codes

Instead of accepting the generic response, inquire on the behavioral health service types: MH (mental health), A4 (psychiatric), A6 (psychotherapy), A7 (psychiatric inpatient), A8 (psychiatric outpatient), and AI (substance abuse). A plan that carves out will usually return meaningfully different benefit data on these codes, or return nothing at all, which is itself a signal.

Read the raw 271, not the summary screen

When a benefit is delegated, the 271 commonly discloses it through an eligibility or benefit information code of U (contact the following entity for eligibility or benefit information) or R (other or additional payer), followed by a loop naming the entity and its contact information. That is the carve-out, stated in the transaction.

Most practice management systems collapse the 271 into a tidy summary card showing "Active" and a copay amount. The delegation loop never reaches the person doing the verification. If your system supports viewing the raw response or an expanded benefit detail view, train your eligibility team to open it on every new behavioral health patient.

How it goes wrong in practice

A patient schedules an initial evaluation and presents a card from a large national carrier. The front desk runs eligibility, sees active coverage and a $30 office copay, and collects $30. The clinician performs a 90791. The claim goes out to the carrier's medical payer ID.

Three weeks later the claim denies with CARC 109, send the claim to the correct payer. The billing team now discovers that behavioral health is delegated, the clinician was never credentialed with the delegated network, the real behavioral health copay was $50, and 21 days of the timely filing window are gone. One skipped step at intake has created rework for the front desk, the biller, the clinician, and the patient.

A response that says active coverage is not a completed behavioral health verification.

How Mental Health Carve-Outs Cause Claim Denials

1. The claim is sent to the medical payer

This surfaces as a clearinghouse rejection, a denial as not covered, or a remit instructing you to bill another entity. The codes to watch are CARC 109 (not covered by this payer, send to the correct payer) and CARC 24 (charges covered under a capitation agreement or managed care plan), which is what a delegated behavioral health arrangement often looks like on a remit.

Do not resubmit the same claim to the same payer. A routing denial does not change on the second attempt, and every cycle burns filing days.

2. The provider is in network medically but not for behavioral health

A psychiatrist, psychologist, therapist, or other clinician can be credentialed under the medical network and still be unrecognized under the patient's behavioral health benefit. The usual result is CARC 242 (services not provided by network providers) or an out-of-network benefit applied to an in-network patient estimate.

Confirm network participation for all five of these together:

• The individual rendering provider
• The billing entity and its tax ID
• The service location
• The specific behavioral health product
• The date of service

A representative saying "the group is participating" is not sufficient when the rendering clinician is not loaded correctly under that group.

3. Authorization was checked with the wrong organization

The medical payer says no authorization is required, because it does not administer the benefit and is answering about services it does control. The claim then denies with CARC 197 (precertification or authorization absent). The delegated administrator maintains its own requirements for:

• Psychological testing
• Neuropsychological testing
• Intensive outpatient treatment
• Partial hospitalization
• Applied Behavior Analysis
• Transcranial magnetic stimulation
• Spravato-related services
• Substance use disorder treatment
• Extended or high-frequency outpatient services

The practice should verify authorization with the organization responsible for the specific behavioral health service.

4. The wrong copay or deductible is quoted

The medical office copay in a general eligibility response is not the patient's outpatient behavioral health responsibility. The behavioral health benefit can carry a different copay, coinsurance instead of a copay, a deductible that applies before copays, different telehealth cost sharing, and different rules for facility versus professional services.

One number deserves particular scrutiny. For plans subject to the Mental Health Parity and Addiction Equity Act, a separate deductible that applies only to mental health and substance use benefits is generally not permitted. Cumulative financial requirements have to accumulate together with medical and surgical benefits in the same classification. Carve-outs are exactly where this breaks, because two administrators are tracking accumulators independently.

So when a representative quotes a separate behavioral health deductible, treat it as a flag rather than a figure to pass to the patient. Either the plan falls outside parity requirements, or the accumulators are out of sync between the medical carrier and the administrator. Both are worth resolving before you collect.

Bad estimates are expensive twice: refunds and rebilling on the back end, and a credibility problem with the patient that lands on your front desk.

5. The correct payer is found too late

The practice may spend weeks submitting, correcting, calling, and waiting before identifying the carve-out. By the time the correct administrator is found, the claim may be close to or beyond the applicable filing deadline.

When redirecting a claim, retain:

• The original clearinghouse acceptance or rejection report
• The original submission date
• Payer correspondence
• Call reference numbers
• Screenshots or saved eligibility results
• Documentation showing that the claim was initially sent based on available payer information

These records may support a timely filing reconsideration, although approval is not guaranteed.

Behavioral Health Carve-Out Verification Checklist

Run this before the first visit and again whenever the patient's coverage changes. The order matters: each step determines who can answer the next one.

1. Read both sides of the card. Look for separate mental health, behavioral health, or substance use phone numbers, a second website, and any authorization line that differs from the medical one. The largest logo is not the answer.
2. Name the service you are verifying. "Mental health benefits" is too broad. Psychological testing, an intensive outpatient program, ABA, and a weekly 90837 can each follow different rules under the same plan.
3. Identify who administers that service before asking anything else. Every answer you get from the wrong organization is worthless, including a reassuring one.
4. Then verify network, benefits, authorization, and claim route with the organization that actually holds the benefit.

Member and plan

• Coverage is active for the date of service, not just today
• Member ID, group number, and plan type are captured
• Employer group or plan sponsor is noted, since this often drives the carve-out
• Funding type is identified as self-funded or fully insured when the plan will say

Behavioral health administrator

• Behavioral health benefits are administered by the medical carrier or a delegated organization
• The administrator's full name is documented
• The correct portal and provider-services number are documented
• The claim payer ID or submission route is confirmed
• The claim mailing address is documented if paper submission is required

Network status

• Rendering provider is in network
• Billing group is in network
• Provider is linked to the group
• Service location is recognized
• Provider type and specialty are eligible for the planned service
• Network status is effective on the date of service

Benefits

• Planned CPT codes are covered, by code, not by category
• Copay or coinsurance for outpatient behavioral health is confirmed
• Deductible, remaining deductible, and out-of-pocket maximum are confirmed
• Any separate behavioral health deductible is challenged against parity requirements before it is quoted
• Telehealth coverage, place of service, and required modifiers are confirmed
• Visit, frequency, or unit limits are documented

Authorization

• Prior authorization requirement is checked
• Notification or registration requirement is checked
• Authorization number is documented when applicable
• Approved CPT codes are documented
• Approved units or visits are documented
• Effective and expiration dates are documented
• Approved provider and location match the scheduled service

Audit trail

• Verification date, time, and the name of the representative or portal are recorded
• Call reference number is captured on every phone verification
• Screenshots or saved electronic responses are attached to the account
• Conflicting or incomplete answers are escalated rather than averaged
• The record is visible to intake, scheduling, authorization, and billing, not buried in one person's notes

When you quote the patient, say plainly that the estimate reflects what the payer told you on a specific date and is not a guarantee of payment. That one sentence prevents a large share of downstream balance disputes.

What to Do When a Behavioral Health Claim Was Sent to the Wrong Payer

1. Read the rejection or denial completely

Determine whether the claim rejected before payer acceptance, was accepted and then denied, was forwarded to another entity, requires a corrected claim, or must be submitted as a new claim. These distinctions affect the next action.

2. Reverify the date of service

Confirm who administered the behavioral health benefit on the actual date of service. Current plan information may not reflect historical coverage.

3. Confirm network and authorization before you resubmit

Redirecting a claim to the correct administrator does not help if the clinician was out of network with that administrator or the service required an authorization nobody obtained. Establish both before the claim moves.

4. If the clinician is out of network, ask about a single case agreement

This is the step most teams skip. When a carve-out puts an established patient's clinician outside the delegated network, many administrators will consider a single case agreement, particularly where continuity of care is at stake, the patient is mid-episode, or the network lacks adequate access for that specialty or geography. Some will consider it retroactively for dates already rendered.

Ask specifically, document who authorized it, and get the agreement in writing with the approved codes, units, rate, and date range. Do not assume the answer is no because the network status says no.

5. Confirm the correct submission method

Verify the payer ID, clearinghouse route, billing and rendering NPI requirements, taxonomy, where the authorization number belongs on the claim, whether the administrator wants a corrected claim or an original, and the paper address if electronic submission is not available.

6. Preserve timely filing evidence

Attach proof of the original submission when you request reconsideration from the correct payer. The clearinghouse acceptance report with its original date is the strongest document you have.

7. Correct the patient's insurance record

Update the practice management or EHR record so the next date of service does not repeat the error. This is the step that separates a one-time write-off from a recurring pattern across an entire caseload.

8. Add the finding to the payer matrix

Document the relationship, and label it by product, employer group, and date verified. Do not convert one patient's result into a universal rule for every member carrying that insurance brand.

Build a Behavioral Health Payer-Routing Matrix

A payer-routing matrix can reduce repeat research and inconsistent handling. Recommended fields include:

The matrix should help staff know where to start. It should not replace member-specific verification.

Payer relationships, portals, network arrangements, and claim routes can change. Review the matrix regularly and whenever a payer notice, denial pattern, or new employer group indicates a different workflow.

Who Owns What

Carve-out errors are almost always handoff errors. In a group practice or billing company, name the owner for each step so nothing depends on one person remembering.

Metrics to Monitor

No practice management system has a denial bucket labeled "carve-out." The problem hides inside several codes at once, which is why it can run for months unnoticed. Track:

• CARC 109 and CARC 24 volume on behavioral health claims, trended by payer and employer group
• CARC 242 and out-of-network processing on patients you believed were in network
• CARC 197 authorization denials where the auth was obtained from the wrong organization
• Days from first denial to correct payer identification
• Claims within 30 days of timely filing after a payer redirection
• Patient refunds and rebills caused by inaccurate benefit estimates
• Front-end verification completion rate for new behavioral health patients

If CARC 109 shows up repeatedly under a single employer group, you have found a carve-out your matrix does not know about. Persistent wrong-payer routing is a front-end failure that arrives disguised as a denial management workload, and it will not be solved by working the denials faster. It is also a reliable contributor to aging balances, which is the same pattern behind AR over 90 in behavioral health practices.

The Bottom Line

A carve-out is a hidden handoff inside the insurance system. The carrier on the card confirms that the patient is insured. A different organization controls the network, the authorization, the benefit, and the claim.

Do not stop at active coverage. Identify who administers the behavioral health benefit and document the full path from eligibility to payment.

A verification is finished when it answers seven questions: who administers the benefit, whether this clinician is in that network, whether the specific code is covered, whether authorization is required and from whom, what the patient owes, where the claim goes, and how you would prove what you were told. Capture those before the first visit and most carve-out denials stop happening rather than get worked.

Check Your Behavioral Health Billing Workflow

Not sure whether carve-outs, authorization gaps, or inconsistent eligibility checks are costing you? The Behavioral Health Billing Health Check walks through the controls that move an account from intake to payment.

Related reading:

• Behavioral Health Billing Support
• Psychiatry Billing Guide
• Psychology Billing Guide
• ABA Billing Guide
• TherapyNotes Billing Support

This article is for general operational education and is not legal, coding, clinical, or payer-contract advice. Health plan rules, payer relationships, network participation, authorization requirements, and claim submission instructions vary. Verify current requirements directly with the applicable payer or administrator before providing or billing services.

Frequently Asked Questions